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Assessment of character variation in...

Emery, Meaghan Marie.

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Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record./
Author:	Emery, Meaghan Marie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	253 p.
Notes:	Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
Contained By:	Dissertation Abstracts International78-05B(E).
Subject:	Paleontology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10193630
ISBN:	9781369359725

Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record.
Emery, Meaghan Marie.

Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 253 p.

Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.

Thesis (Ph.D.)--University of Oregon, 2016.

Accurately distinguishing species in the fossil record is difficult when the extent of osteological variation in many modern animals is unknown. Research into intraspecific variation has been conducted in a number of groups, but has not been conducted for systematics use in most modern artiodactyls. In this dissertation I quantify intraspecific variation of teeth in 14 species of modern artiodactyl, then test how accurately cranial characters diagnose modern, sympatric species of duikers, and use this information to reassess the artiodactyl diversity of a fossil group: the superfamily Merycoidodontoidea in the John Day Fossil Beds. Ultimately, variation is not constant between orders or different size classes, is influenced by morphology, size, and dimorphism, and this variation should be incorporated into fossil diagnoses to avoid both overconfidence of diagnosis and under-recognition of possible intraspecific variation.

ISBN: 9781369359725Subjects--Topical Terms:

518862
Paleontology.

Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record.
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245 1 0 $a Assessment of character variation in the crania and teeth of modern artiodactyls for better species diagnosis in the fossil record.
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300 $a 253 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
500 $a Includes supplementary digital materials.
500 $a Adviser: Edward B. Davis.
502 $a Thesis (Ph.D.)--University of Oregon, 2016.
520 $a Accurately distinguishing species in the fossil record is difficult when the extent of osteological variation in many modern animals is unknown. Research into intraspecific variation has been conducted in a number of groups, but has not been conducted for systematics use in most modern artiodactyls. In this dissertation I quantify intraspecific variation of teeth in 14 species of modern artiodactyl, then test how accurately cranial characters diagnose modern, sympatric species of duikers, and use this information to reassess the artiodactyl diversity of a fossil group: the superfamily Merycoidodontoidea in the John Day Fossil Beds. Ultimately, variation is not constant between orders or different size classes, is influenced by morphology, size, and dimorphism, and this variation should be incorporated into fossil diagnoses to avoid both overconfidence of diagnosis and under-recognition of possible intraspecific variation.
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650 4 $a Ecology. $3 516476
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