By Eric J. Sargis, Marian Dagosto

ISBN-10: 1402069960

ISBN-13: 9781402069963

ISBN-10: 1402069979

ISBN-13: 9781402069970

This publication celebrates the contributions of Dr. Frederick S. Szalay to the sector of Mammalian Evolutionary Morphology. Professor Szalay is a robust suggest for biologically and evolutionarily significant personality research. He has released approximately two hundred articles, six monographs, and 6 books in this topic. This booklet positive factors topics equivalent to the evolution and version of mammals and offers up to date articles at the evolutionary morphology of a variety of mammalian teams.

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Extra resources for Mammalian Evolutionary Morphology: A Tribute to Frederick S. Szalay (Vertebrate Paleobiology and Paleoanthropology)

Example text

Atokatheridium is also similar to stem boreosphenidans in lacking a postcingulid. The lower molars of the Tomato Hill taxa possess a few characters that serve to distance them somewhat from the primitive boreosphenidan condition. Most notable is the hypertrophy of the paraconid and paracristid. The paraconid is significantly taller than the metaconid (somewhat similar to Kielantherium), projecting somewhat anteriorly and supporting a very strong crest and carnassial notch (this shearing surface is particularly well developed on trigonids referred to Oklatheridium).

The conules in Oklatheridium are relatively large compared to those of stem boreosphenidans, deltatheroidans, or other contemporaneous taxa, providing another point of contrast. All considered, the protoconal region of Atokatheridium shows a blend of primitive and advanced features, while Oklatheridium is generally 1. 9. Upper molar comparisons: A, Kielantherium gobiense (reversed); B, Pappotherium pattersoni (reversed); C, Holoclemensia texana (reversed); D, Deltatheridium praetrituberculare; E, Atokatheridium boreni (reversed); F, Oklatheridium szalayi (lingual half reconstructed); G, Kokopellia juddi; H, Prokennalestes trofimovi.

1. 5 – Oklatheridium szalayi 25 km ATOKA JOHNSTON PUSHMATAHA cf. Oklatheridium sp. 2. Early Cretaceous mammal localities, Trinity Group, Texas and Oklahoma. A, Map detailing outcrop of Antlers Formation (shaded) in southeastern Oklahoma. McLeod Honor Farm (OMNH microvertebrate locality V706) indicated by dot. B, Map detailing mammal-bearing microvertebrate localities from the Trinity Group (Aptian–Albian): 1, McLeod Honor Farm; 2, Greenwood Canyon; 3, Butler Farm (all Antlers Formation); 4, Paluxy Church (Twin Mountains Formation, late Aptian).

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Mammalian Evolutionary Morphology: A Tribute to Frederick S. Szalay (Vertebrate Paleobiology and Paleoanthropology) by Eric J. Sargis, Marian Dagosto

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