Review of the North American Eocene and Oligocene Apatemyidae (Mammalia: Insectivora) by Robert M. West Download PDF EPUB FB2
Add tags for "Review of the North American Eocene and Oligocene Apatemyidae (Mammalia: Insectivora)". Be the first. However, averaged over Late Eocene and Early Oligocene genera, this effect should not significantly change the major condusions.
Results Total diversity.-The generic and familial (Fig. 2) range data for Late Eocene and Oligo-cene North American land mammals are sum-marized in terms of total diversity in Table 1 and Fig. West () reviewed the North American Eocene and Oligocene Apatemyidae (not the Paleocene taxa) and reduced several previously named genera (Apatemys, Labidolemur, Stehlinius, Stehlinella, Teilhardella, and Sinclairella) and species to just two genera: Apatemys, with two highly variable species, and Sinclairella, with a single : Nicholas J.
Czaplewski, Gary S. Morgan. The first part of the book summarizes the latest information in dating and correlation of the strata of late middle Eocene through early Oligocene age in North America. The seco The transition from the Eocene to the Oligocene epochs, from approximately 47 to 30 million years ago, was the most dramatic episode of climatic and biotic change since /5(4).
Terminology, calibration and d 18 O signature of the Eocene–Oligocene Transition. (a) Benthic foraminifera d 18 O compilation (after Zachos et al. ) from mid-to high southern latitudes. The overall time range of the Apatemyidae as presently known spans virtually the entire Paleogene, from the early Paleocene to Eocene in Europe and from the early Paleocene to the late Oligocene (early Arikareean) in North America (McKenna & Bell, ; Rose, ; Gunnell et al., ).
Apatemyids are unknown from other continents. PDF | A new species of Apatemyidae, Sinclairella simplicidens, is based on four isolated teeth that were screenwashed from fissure fillings at the late | Find, read and cite all the research.
the Apatemyidae as presently known spans virtually the entire Paleogene, from the early Paleocene to Eocene in Europe and from the early Paleocene to the late Oligocene (early Arikareean) in North America (McKenna & Bell, ; Rose, ; Gunnell et al., ).
Apatemyids are unknown from other continents. The earliest North American genera in. thus trumping the magniﬁcent ﬁndings made in the late Eocene and early Oligocene Fayum of northern Africa.
The chance to do so came about with the discovery of new fossils, mainly Chinese, which Beard and colleagues are now collecting into the Eosimiidae, as well as some North American Eocene omomyids that led him to suspect this was the case.
Fruits of Fraxinus L. from Eucene sediments of North America constitute the oldest unequivocal macrofossil evidence of the genus, of the subfamily Oleoideae, and of the family Oleaceae.
We briefly review North American Paleogene records of Fraxinus, and report the results of a study of 30 samaras of Fraxinus wilcoxiana Berry (including the holotype) from two localities in the Middle Eocene. The Terrestrial Eocene-Oligocene Transition in North America to huge hippo-like forms that apparently lived in rivers and lakes.
This book includes a systematic review of the entire North American Rhinocerotidae, with complete descriptions, measurements, and figures of every bone in every species - the first such review in over a century.
The Eocene–Oligocene Transition (EOT ~ 34 Ma) reflects the onset of major Antarctic glaciation. The primary geochemical signature of the EOT is two ~ kyr spaced shifts in increasing deep-sea oxygen isotope values, possibly reflecting both global cooling and/or increasing ice volume.
The mild tropical climates of the Paleocene and early Eocene were replaced by modern climatic conditions and extremes, including glacial ice in Antarctica.
The first part of this book summarizes the latest information in the dating and correlation of the strata of late middle Eocene through early Oligocene age in North : $ The Oligocene Epoch Although it lasted a "short" 11 million years, a number of major changes occurred during this time.
These changes include the appearance of the first elephants with trunks, early horses, and the appearance of many grasses — plants that would produce extensive grasslands in the following epoch, the Miocene.
The second part reviews almost all the important terrestrial reptiles and mammals found near the Eocene-Oligocene boundary in the White River chronofauna, from the turtles, snakes and lizards to the common rodents, carnivores, artiodactyls, and perissodactyls. This book places into modern context the information by which North American mammalian paleontologists recognize, divide, calibrate, and discuss intervals of mammalian evolution known as North American Land Mammal Ages.
It incorporates new information on the systematic biology of the fossil record and utilizes the many recent advances in geochronologic methods and their results. During the transition from the Eocene to the Oligocene epochs, the mild tropical climates of the Paleocene and early Eocene were replaced by modern climatic conditions and extremes, including glacial ice in Antarctica.
The best terrestrial record of the Eocene-Oligocene transition is found in North America, including the spectacular cliffs and spires of the Big Badlands National Park, in South.
Review of the North American Eocene and Oligocene Apatemyidae: Mammalia: Insectivora by Robert M. West avg rating — 0 ratings — published Donald R.
Prothero is a Research Associate in Vertebrate Paleontology at the Natural History Museum of Los Angeles County. He has taught college geology and paleontology for 40 years at institutions such as Columbia University, Vassar College, Knox College, and Pierce College, and currently at Reviews: 1.
North American mammal diversity remained relatively intact from the Eocene, with the loss of a small number of specialized arboreal Cimolestans and Metatherians. Multituberculates remained as diverse and ubiquitous as ever, occupying all sorts of rodent-like niches, including burrowing herbivores (Taeniolaboids), tiny mouse-sized generalists.
Part I: North America. Annual Review of Ecology and Systematics Webb, S. and S. Perrigo. Late Cenozoic vertebrates from Honduras and El Salvador. Journal of Vertebrate Paleontology West, R. Review of the North American Eocene and Oligocene Apatemyidae (Mammalia: Insectivora). Review of the North American Eocene and Oligocene Apatemyidae: Mammalia: Insectivora.
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Robert M West. 01 Jun Molluscan Faunas Across the Eocene/Oligocene Boundary in the North American Gulf Coastal Plain, with Comparisons to Those of the Eocene and Oligocene of France, by David T. Dockery III and Pierre Lozouet Biotic Patterns in Eocene-Oligocene Echinoids.
Eocene" Uintan land mammal "ages" in North America became middle Eocene, and the "early Oligocene" Chadronian land mammal "age" in North America (and its equivalent in Asia) became late Eocene. The "middle" and "late" Oligocene Orellan and Whitneyan land mammal Annu.
Rev. Earth Planet. Sci. A review of past work on the Eocene, Oligocene, and lower Miocene sediments of the Coastal Plain of North Carolina, together with fieldwork in that area, has indicated the necessity of a thorough stratigraphic revision of those beds.
The Castle Hayne Formation (middle Eocene) is redefined. PALEOCENE AND EARLY EOCENE APATEMYIDAE TEXT-FIG. 2 - Lower dentition of Lobidolernur kayi Simpson from ~~'s Microsite (SC). Left dentary, UMin occlusal (A) and lateral view (B).
described by Simpson () from Eagle Mine, a latest Paleocene (early Clarkforkian) locality near Bear Creek, Montana. Prothero asserts that the North American rhino was one of the most succesfull giant herbivores for almost 18 million years and began evolving for about 40 million years previous in Asia from the late Eocene period,the Oligocene,and into the rhinos had that what Prothero calls a "lawnmower snout" and another fact that surprised.
Nathan D. Sheldon, Gregory J. Retallack, and Satoshi Tanaka, "Geochemical Climofunctions from North American Soils and Application to Paleosols across the Eocene‐Oligocene Boundary in Oregon," The Journal of Geologyno.
6 (November ): Pacific Coast Eocene-Oligocene marine chronostratigraphy: a review and an update / Donald R. Prothero --Turnovers in marine gastropod faunas during the Eocene-Oligocene transition, West Coast of the United States / Richard L. Squires --Biotic response to the Eocene-Oligocene transition: gastropod assemblages in the high-latitude North Pacific.
The middle Eocene-early Oligocene was a critical period in earth history in that major changes in ocean circulation and global climate, reflected in significant turnovers in marine and terrestrial biotas, occurred over an approximately 10 m.y.
interval. Because of its strategic importance. A New Mormoopid Bat from the Oligocene (Whitneyan and Early Arikareean) of Florida, and Phylogenetic Relationships of the Major Clades of Mormoopidae (Mammalia: Chiroptera). Bulletin of the American Museum of Natural History, Vol.Issue.p.
1.The transition from the Eocene to the Oligocene epochs was the most significant event in earth history since the extinction of dinosaurs. As the first Antarctic ice sheets appeared, major extinctions and faunal turnovers took place on the land and in the sea, eliminating forms adapted to a tropical world and replacing them with the ancestors of most of our modern animal and plant life.Introduction.
Chadronia margaretae Cook, is the only pantolestan, and, together with Sinclairella Jepsen,one of just two cimolestans currently recognized from the White River Group of North America. C. margaretae is known from two specimens from the Chadron Formation (latest Eocene) that are the youngest definitive representatives of both Pantolestidae and Pantolesta from North.