Cenozoic time period. Quaternary, in the geologic history of Earth, a unit of t...

Global climate and the global carbon cycle have undergone substantial changes since the Early Eocene [∼50 million years (Ma)], the period of peak Cenozoic deep ocean temperatures (1–3).Warming dominated during the Paleocene (~58 Ma), and the average temperature was steadily rising (high-latitude surface and deep ocean warmed by ~4°C) …An era is the second largest geochronologic time unit and is the equivalent of a chronostratigraphic erathem. [7] [12] As of April 2022 [update] there are currently ten defined eras/erathems, [2] namely the Eoarchean , Paleoarchean , Mesoarchean , Neoarchean , Paleoproterozoic , Mesoproterozoic , Neoproterozoic , Paleozoic , Mesozoic and ... The quaternary period began 2.6 million years ago and extends into the present. Climate change and the developments it spurs carry the narrative of the Quaternary, the most recent 2.6 million ...The Cenozoic (/ ˌ s iː n ə ˈ z oʊ. ɪ k, ˌ s ɛ n-/ SEE-nə-ZOH-ik, SEN-ə-; lit. 'new life') is Earth's current geological era, representing the last 66 million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants.It is the latest of three geological eras, preceded by the Mesozoic and Paleozoic.The Cenozoic started with the Cretaceous ...The supercontinent Pangaea in the early Mesozoic (at 200 Ma). Pangaea or Pangea (/ p æ n ˈ dʒ iː. ə /) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart …At the end of the Cretaceous Period, and the end of the Mesozoic Era came another mass extinction. This extinction is generally called the K-T Extinction. The "K" comes from the German abbreviation for Cretaceous, and the "T" is from the next period on the Geologic Time Scale - the Tertiary Period of the Cenozoic Era.Sep 11, 2023 · The geologic timeline (also called the geologic time scale) is a system of measurement commonly used by earth scientists. It relates rock strata to time, providing a rough history of geology and life (through the fossil record) on Earth. The geologic timeline is vast, stretching from the formation of the Earth approximately 4.5 billion years ago to the present day and into the future until the ... May 11, 2022 ... We are almost through the Phanerozoic eon! After the Paleozoic and Mesozoic Eras, we get to the Cenozoic era, which is the one we are still ...Cenozoic (66 million years ago until today) means ‘recent life.’ During this era, plants and animals look most like those on Earth today. Periods of the Cenozoic Era are split into even smaller parts known as Epochs, so you …The Cenozoic Era contains two geologic time periods, including the Tertiary Period (65 mya to approximately 1.8 mya) and the current Quaternary Period (1.8 mya to present day). The Tertiary Period is also sometimes referred to in terms of a Paleogene Period and a Neogene Period.Science. Reference. Paleogene Period. Learn about the time period that took place 65 to 23 million years ago. 3 min read. At the dawn of the Paleogene—the beginning of the Cenozoic...Cenozoic: noun; an era of geological history that extends from the beginning of the Tertiary period to the present time and is marked by a rapid evolution of mammals and birds and of flowering plants and especially grasses; relating to the corresponding system of rocks. Extinct: adjective; no longer existing. Assessment Materials ReflectionAfter the Cretaceous, a new era of geologic time began; the Cenozoic era, which means the era of "recent life". Traditionally, the first period of the Cenozoic was called the Tertiary , [131] however recent recommendations of the International Commission on Stratigraphy discourage its use, with the correspondent time span divided between the ... 7.1 Position of Cenozoic in the Geologic Time Scale 7.2 Chronology of Cenozoic Era 7.3 Quaternary Period and Pleistocene Glaciations ... However, over a period of time the mammals diversified and radiated taking advantage of the absence of dinosaurs who had dominated the earth during the Mesozoic Era. The mammals occupied almost all the ...Sep 24, 2023 · The Pleistocene ended 11,700 years ago. It is preceded by the Pliocene Epoch of the Neogene Period and is followed by the Holocene Epoch. The Pleistocene Epoch is best known as a time during which extensive ice sheets and other glaciers formed repeatedly on the landmasses and has been informally referred to as the “Great Ice Age.” The ... Paleogene Period. Learn about the time period that took place 65 to 23 million years ago. At the dawn of the Paleogene—the beginning of the Cenozoic era—dinosaurs, pterosaurs, and giant marine ...Illustration of Castoroides in New Jersey by Charles R. Knight, 1904 ... The Cenozoic Era began after the impact of an asteroid wiped out the dinosaurs, enabling ...Paleozoic Era, major interval of geologic time that began 538.8 million years ago with the Cambrian explosion, an extraordinary diversification of marine animals, and ended about 252 million years ago with the end-Permian extinction, the greatest extinction event in Earth history. The major.Following the Precambrian Time, Paleozoic Era, and Mesozoic Era on the geologic time scale is the Cenozoic Era, which began 65 million years ago and continues to the present. After the Cretaceous-Tertiary, or K-T, Extinction at the end of the Cretaceous Period of the Mesozoic Era, which eliminated 80 percent of all species of animals, the Earth ...The Phanerozoic is the current and the latest of the four geologic eons in the Earth's geologic time scale, covering the time period from 538.8 million years ago to the present. It is the eon during which abundant animal and plant life has proliferated, diversified and colonized various niches on the Earth's surface, beginning with the Cambrian period …The start of the Quaternary period, the last and current period of the Cenozoic, is marked by the start of our current ice age 2.58 million years ago. During this time period, ice sheets advanced and retreated, most likely due to Milankovitch cycles (see Chapter 15). Also at this time, various cold-adapted megafauna emerged (like giant sloths ...The geologic era in which humans have evolved and spread over the Earth is the Cenozoic Era. This time period began roughly 65 million years before the start of the 21st century. The Cenozoic Era began at the end of the Mesozoic Era when th...The Quaternary ( / kwəˈtɜːrnəri, ˈkwɒtərnɛri / kwə-TUR-nə-ree, KWOT-ər-nerr-ee) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). [4] It follows the Neogene Period and spans from 2.58 million years ago to the present. [5] The Cenozoic Era began 65 million years ago when an asteroid impact killed off a majority of the dinosaurs and the era of the mammal began. Learn more about the definition, time period, and the ... The last greenhouse period began 260 million years ago during the late Permian Period at the end of the Karoo Ice Age. It lasted all through the time of the non-avian dinosaurs during the Mesozoic Era, and ended 33.9 million years ago in the middle of the Cenozoic Era (the current Era). This greenhouse period lasted 226.1 million years.From hominids, humans evolved in the last 4 million years of the Cenozoic era. 1. The dinosaurs went extinct. Ultimately, the start of the Cenozoic Era was the demise of dinosaurs. After a 6-mile wide asteroid hit Earth 66 million years ago, a dust cloud blocked the sun. It was the Cretaceous–Paleogene (K-Pg) extinction event that wiped out ...The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.Most other tetrapods weighing more than 25 kilograms (55 pounds) …The Cenozoic Era is easy to define: it's the stretch of geologic time that kicked off with the Cretaceous/Tertiary Extinction that destroyed the dinosaurs 65 million years ago, and continues down to the present day. ... The Periods and Epochs of the Cenozoic Era . The Paleogene period (65-23 million years ago) was the age when the …Online exhibits: Geologic time scale: Cenozoic Era. The Oligocene Epoch. The Oligocene Epoch, right smack in the middle of the Tertiary Period (and end of the Paleogene), lasted from about 33.9 to 23 million years ago.* Although it lasted a "short" 11 million years, a number of major changes occurred during this time.The Pleistocene Epoch. This mammoth (right), found in deposits in Russia, was one of the largest land mammals of the Pleistocene, the time period that spanned from 2.6 million to 11,700 years ago.*. Pleistocene biotas were extremely close to modern ones many genera and even species of Pleistocene conifers, mosses, flowering plants, insects ...Quaternary Period, Interval of geologic time, approximately 2.6 million years ago to the present.The Quaternary follows the Neogene Period and is the most recent of the three periods of the Cenozoic Era.The Quaternary is subdivided into the Pleistocene Epoch and the Holocene Epoch and is characterized by major cyclical changes of climate on a …1 Introduction—Interglacials of the Last 800 ka. Earth's climate of the last 800 ka (1 ka = 1000 years) is the latest stage in a slow cooling that has been in progress for the last ~50 Ma (1 Ma = 1 million years) [Zachos et al., 2008].During this cooling, ice sheets formed on the Antarctic continent ~40 Ma ago, while the first signs of Northern …Apr 27, 2023 · Cenozoic Era. Cenozoic Time Span. Date range: 66.0 million years ago–Today. Length: 66.0 million years (1.5% of geologic time) Geologic calendar: December 26 (6 PM)–December 31 (Midnight) (5 days, 6 hours) Introduction. The Cenozoic Era is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Cenozoic climates. The Cenozoic Era—encompassing the past 66 million years, the time that has elapsed since the mass extinction event marking the end of the Cretaceous Period—has a broad range of climatic variation characterized by alternating intervals of global warming and cooling. Earth has experienced both extreme warmth and extreme ... An ice age is a long period of reduction in the temperature of the Earth's surface and atmosphere.. Ice Age may also refer to: . Science. Last Glacial Period, the most recent glacial period (115,000 to 11,700 years ago); Late Cenozoic Ice Age, the geologic period of the last 33.9 million years; Little Ice Age, a period of relative cold in certain regions from …The Paleogene Period is a division of the Cenozoic Era and covers the time interval between 66 and 23 million years ago. It follows the Late Cretaceous Period and is divided into three subperiods: the Paleocene, Eocene, and Oligocene.Cenozoic. Cenozoic (66 million years ago until today) means ‘recent life.’. During this era, plants and animals look most like those on Earth today. Periods of the Cenozoic Era are split into even smaller parts known as Epochs, so you will see even more signposts in this Era. Cenozoic signposts are colored yellow.Visit—Cenozoic Parks. Every park contains some slice of geologic time. Here we highlight a few parks associated with Cenozoic Era. This is not to say that a particular park has only rocks from the specified period. Rather, rocks in selected parks exemplify a certain event or preserve fossils or rocks from a certain geologic age.8.01: The Geological Time Scale#fig8.1.3. Figure \(\PageIndex{4}\) The periods (middle row) and epochs (bottom row) of the Cenozoic era. 8.01: The Geological Time Scale#fig8.1.4. Most of the boundaries between the periods and epochs of the geological time scale have been fixed on the basis of significant changes in the fossil …8.01: The Geological Time Scale#fig8.1.3. Figure \(\PageIndex{4}\) The periods (middle row) and epochs (bottom row) of the Cenozoic era. 8.01: The Geological Time Scale#fig8.1.4. Most of the boundaries between the periods and epochs of the geological time scale have been fixed on the basis of significant changes in the fossil …After the Cretaceous, a new era of geologic time began; the Cenozoic era, which means the era of "recent life". Traditionally, the first period of the Cenozoic was called the Tertiary , [131] however recent recommendations of the International Commission on Stratigraphy discourage its use, with the correspondent time span divided between the ... The Paleogene Period (or the early part of the Tertiary Period) represents the time period after the major extinction that wiped out the dinosaurs and about half of the known species worldwide. Lutgens & Tarbuck further subdivide this time period into the Paleocene Epoch (65-54.8Myr), the Eocene Epoch (54.8-33.7Myr), and the Oligocene Epoch (33 ... Geological time has been divided into four eons: Hadean, Archean, Proterozoic, and Phanerozoic, and as shown in Figure 8.3, the first three of these represent almost 90% of Earth’s history. The last one, the Phanerozoic (meaning “visible life”), is the time that we are most familiar with because Phanerozoic rocks are the most common on ...Deep Time: Intro | Precambrian Eon | Paleozoic Era | Mesozoic Era | Cenozoic Era. Cenozoic Era: (248 mya-present) Paleocene | Eocene | Oligocene | Miocene | Pliocene ...Generally, the eras used to describe the modern Earth are the Quaternary geological era and the Cenozoic evolutionary era. In the future, there may also be a historical era that the current time period, the 21st century, will belong to.After the Cretaceous, a new era of geologic time began; the Cenozoic era, which means the era of "recent life". Traditionally, the first period of the Cenozoic was called the Tertiary , [131] however recent recommendations of the International Commission on Stratigraphy discourage its use, with the correspondent time span divided between the ...geologic time scale v. 6.0 cenozoic mesozoic paleozoic precambrian age epoch age picks magnetic period hist. chro n. polarity quater-nary pleistocene* holocene* calabrian gelasian c1 c2 c2a c3 c3a c4 c4a c5 c5a c6 c6a c6b c6c c7 c5b c5c c5d c5e c8 c9 c10 c7a c11 c12 c13 c15 c16 c17 c18 c19 c20 c21 c22 c23 c24 c25 c26 c27 c28 c29 c30 0.012 1.8 3 ...The Quaternary Period (2.6 million years ago to the present) is composed of the Pleistocene and Holocene epochs. The Holocene Epoch began 11,700 years ago and continues into modern time. The vast interval of time that spans Earth’s geologic history is known as geologic time. It began roughly 4.6 billion years ago when Earth began to form …We don’t know as much about the first 3 billion years of Utah’s geologic history as we know about the 540 million years of the Phanerozoic Eon that followed, but 2.5-billion- to 540-million-year-old rocks are exposed in the Raft River Range, Uinta Mountains, and parts of the Wasatch Range, as well as several other smaller areas of the state.The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time. This is a misnomer for several reasons. First, the history of mammals began long before the Cenozoic began. Second, the diversity of life during the Cenozoic is far wider than mammals. The Cenozoic could have been called …The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.The Cenozoic Era is the time period in Earth's history when mammals became dominant. Species such as the wooly mammoth and saber-toothed tiger gave way to the rise of humans.The Paleogene Period spans the interval from 66 to 23 Ma. The Paleogene is further subdivided into the Paleocene, Eocene, and Oligocene epochs. Some time scales still use the archaic term “Tertiary” for the Paleocene through Pliocene, and the Quaternary for the Pleistocene and Holocene. During the Paleogene, Pangea continued to break up ...During the Mesozoic, the time period when dinosaurs roamed on land, many of these large creatures were the top predators in the ocean food chain and fed on fish, cephalopods, bivalves, and even one another. The most notable of these reptiles were the ichthyosaurs, plesiosaurs, mosasaurs, and sea turtles. ... For much of the Cenozoic, a seaway ...Sep 29, 2023 · Tertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago. It is the traditional name for the first of two periods in the Cenozoic Era (66 million years ago to the present); the second is the Quaternary Period (2.6 million years ago to the present). The Holocene is a geological epoch which began at the end of the Pleistocene [1] (around 10,000 14C years ago) and continues to the present. The Holocene is ...The ICS abandoned the sub-era structure in 2008, deciding instead to formally designate the Quaternary as the uppermost period of the Cenozoic Era, following the aforementioned Paleogene and Neogene periods. In 2009 the International Union of Geological Sciences (IUGS) officially ratified the decision to set the beginning of the Quaternary at 2,588,000 years ago, a time when rock strata show ...Cenozoic Era. Cenozoic Time Span. Date range: 66.0 million years ago–Today. Length: 66.0 million years (1.5% of geologic time) Geologic calendar: December 26 (6 PM)–December 31 (Midnight) (5 days, 6 hours) Introduction. The Cenozoic Era is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic.Cenozoic. Cenozoic (66 million years ago until today) means ‘recent life.’. During this era, plants and animals look most like those on Earth today. Periods of the Cenozoic Era are split into even smaller parts known as Epochs, so you will see even more signposts in this Era. Cenozoic signposts are colored yellow.The Cenozoic Era is also divided into seven epochs, which are the smallest units of time in the geologic time scale. An epoch is a unit of geologic time that further subdivides periods, narrowing ...15.4: Prehistoric Climate Change. Over Earth history, the climate has changed a lot. For example, during the Mesozoic Era, the Age of Dinosaurs, the climate was much warmer and carbon dioxide was abundant in the atmosphere. However, throughout the Cenozoic Era (65 Million years ago to today), the climate has been gradually cooling.Nov 6, 2013 ... The Cenozoic is divided into three periods: The Paleogene, Neogene, and Quaternary; and seven epochs: The Paleocene, Eocene, Oligocene, Miocene, ...The start of the Quaternary period, the last and current period of the Cenozoic, is marked by the start of our current ice age 2.58 million years ago. During this time period, ice …An era is the second largest geochronologic time unit and is the equivalent of a chronostratigraphic erathem. [7] [12] As of April 2022 [update] there are currently ten defined eras/erathems, [2] namely the Eoarchean , Paleoarchean , Mesoarchean , Neoarchean , Paleoproterozoic , Mesoproterozoic , Neoproterozoic , Paleozoic , Mesozoic and ... Periods. Quaternary (Pleistocene/Holocene) – The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy. It follows the Neogene Period and spans from 2.588 ± 0.005 million years ago to the present.It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the span of time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. Cenozoic Era is the last geologic period and is often referred as the age of mammals. It is thought to begin 65 million years ago and continued till present. The name Cenozoic means new life. With the destruction and perish of dinosaurs by the end of the Cretaceous period, this era has set the stage for the rising and abundance of mammals ... Falling atmospheric CO 2 levels led to cooling through the Eocene and the expansion of Antarctic ice sheets close to their modern size near the beginning of the Oligocene, a period of poorly documented climate. Here, we present a record of climate evolution across the entire Oligocene (33.9 to 23.0 Ma) based on TEX 86 sea surface …Apr 27, 2023 · The Paleogene Period is the first of three periods in the Cenozoic Era. The Paleogene represents less than 1% of geologic time; however, the rocks of this period were deposited quite recently and are, therefore, at or near Earth’s surface. The Cenozoic Era is the time period in Earth's history when mammals became dominant. Species such as the wooly mammoth and saber-toothed tiger gave way to the rise of humans.The Paleozoic (IPA: /ˌpæli.əˈzoʊ.ɪk,-i.oʊ-, ˌpeɪ-/ PAL-ee-ə-ZOH-ik, -⁠ee-oh-, PAY-; or Palaeozoic) Era is the first of three geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago (Ma), it succeeds the Neoproterozoic (the last era of the Proterozoic Eon) and ends 251.9 Ma at the start of the Mesozoic Era. The Paleozoic is subdivided into six …The Cenozoic Era contains two geologic time periods, including the Tertiary Period (65 mya to approximately 1.8 mya) and the current Quaternary Period (1.8 mya to present day). The Tertiary Period is also sometimes referred to in terms of a Paleogene Period and a Neogene Period.A go shop period is a window of time during which public companies can solicit competing purchase offers. A go shop period is a window of time during which public companies can solicit competing purchase offers. Let&aposs say Company XYZ is...D. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study.. The correct option is D. The Cenozoic era is the most recent era in the geological time scale, spanning from approximately 66 million years ago to the present day.The Silurian Period was a time of uplift and erosion. There are no rocks of this age in Wyoming. As such, there are no Silurian fossils. In neighboring western states, however, a restricted distribution of poorly preserved coral fossils has been documented. ... The Cenozoic Era is sometimes referred to as the "Age of Mammals." It was during ...Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and was succeeded by the Paleogene Period (the first of the two periods into which the Tertiary PeriodMay 1, 2006 ... The Miocene was a time of warmer global climates than those in the preceeding Oligocene, or the following Pliocene. The expansion of grasslands ...The Giant Mammals of the Eocene, Oligocene, and Miocene Epochs. The Eocene epoch, from 56 to 34 million years ago, witnessed the first plus-sized herbivorous mammals. The success of Coryphodon, a half-ton plant-eater with a tiny, dinosaur-sized brain, can be inferred by its wide distribution across early Eocene North America and Eurasia.Cenozoic Time Span. Date range: 66.0 million years ago-Today; Length: 66.0 million years (1.5% of geologic time) Geologic calendar: December 26 (6 PM)-December 31 (Midnight) (5 days, 6 hours) Introduction. The Cenozoic Era is the "Age of Mammals." North America's characteristic landscapes began to develop during the Cenozoic. Birds and ...The Mesozoic Era began 252.2 million years ago, following the conclusion of the Paleozoic Era, and ended 66 million years ago, at the dawn of the Cenozoic Era. (See the geologic time scale.) The major divisions of the Mesozoic Era are, from oldest to youngest, the Triassic Period, the Jurassic Period, and the Cretaceous Period.Prehistoric time line, geologic time scale, photos, facts, maps, and more from National Geographic. Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history ...Geological time has been divided into four eons: Hadean, Archean, Proterozoic, and Phanerozoic, and as shown in Figure 8.3, the first three of these represent almost 90% of Earth’s history. The last one, the Phanerozoic (meaning “visible life”), is the time that we are most familiar with because Phanerozoic rocks are the most common on ...The time scale is divided into four large periods of time—the Cenozoic Era, Mesozoic Era, Paleozoic Era, and The Precambrian. Cenozoic Era. The Cenozoic Era (66 million years ago through today) is the "Age of Mammals." Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like ...Cenozoic Era is the last geologic period and is often referred as the age of mammals. It is thought to begin 65 million years ago and continued till present. The name Cenozoic means new life. With the destruction and perish of dinosaurs by the end of the Cretaceous period, this era has set the stage for the rising and abundance of mammals ...01 of 03 Periods of the Cenozoic Era Smilodon and mammoth evolved during the Cenozoic Era. Getty/Dorling Kindersley Our current Era in the Geologic Time Scale is called the Cenozoic Era. Compared to all of the other Eras throughout the history of the Earth, the Cenozoic Era has been relatively short so far.The Quaternary Period (2.6 million years ago to the present) is composed of the Pleistocene and Holocene epochs. The Holocene Epoch began 11,700 years ago and continues into modern time. The vast interval of time that spans Earth’s geologic history is known as geologic time. It began roughly 4.6 billion years ago when Earth began to form as a ...Generally, the eras used to describe the modern Earth are the Quaternary geological era and the Cenozoic evolutionary era. In the future, there may also be a historical era that the current time period, the 21st century, will belong to.The current era on the geologic time scale is the Cenozoic Era. The era began after the K-T extinction resulted in the end of the Mesozoic Era around 65 million years ago. The extinction of the dinosaurs gave mammals the chance to prolifera.... Jan 29, 2018 · After the Permian Extinction wiped out over 95% Apr 27, 2023 · The Paleogene Period is the first of three p the Cenozoic, which saw the rise of mammals. The Phanerozoic is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic, which are further subdivided into 12 periods. Paleozoic Era. There are six periods in the Paleozoic era: Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Cambrian Period The Cenozoic Timescale and Paleogeography. This ch The Geological Time Scale. Phanerozoic Eon 542 mya—present Cenozoic Era 65 mya—present Neogene Period 23 mya—present. Holocene Epoch 8000 ya—present. Pleistocene Epoch 1.8 mya—8000ya. Pliocene Epoch 5.3 mya—1.8 mya. Miocene Epoch 23 mya—5.3 mya Paleogene Period 65 mya—23 mya. Oligocene Epoch 34 mya—23 myaOn the Geologic Time Scale, the Cenozoic Era covers from approximately 66 million years ago to the present. This period of time corresponds with the extinction of the dinosaurs and the rise of mammals and therefore known as the Cenozoic Era which means “new life” in Greek. This era is divided into 2 periods which include the Tertiary and ... The Cenozoic Era is generally divided into three periods: the P...

Continue Reading