نتایج جستجو برای: geometric morphometric

تعداد نتایج: 106641  

2013
Ana Rosa Gómez Cano Manuel Hernández Fernández M. Ángeles Álvarez-Sierra

Murine rodents represent a highly diverse group, which displays great ecological versatility. In the present paper we analyse the relationship between dental morphology, on one hand, using geometric morphometrics based upon the outline of first upper molar and the dietary preference of extant murine genera, on the other. This ecomorphological study of extant murine rodents demonstrates that die...

2017
John L. Waddington Stanislav Katina Colm M. P. O’Tuathaigh Adrian W. Bowman

Purpose of Review In the context of human developmental conditions, we review the conceptualisation of schizophrenia as a neurodevelopmental disorder, the status of craniofacial dysmorphology as a clinically accessible index of brain dysmorphogenesis, the ability of genetically modified mouse models of craniofacial dysmorphology to inform on the underlying dysmorphogenic process and how geometr...

Journal: :Experimental eye research 2010
Paul G Sanfilippo Andrea Cardini Ian A Sigal Jonathan B Ruddle Brian E Chua Alex W Hewitt David A Mackey

The morphologic appearance of the optic disc is of interest in glaucoma. In contrast to descriptive classification systems that are currently used, a quantitative approach to the analysis of optic disc morphology is required. Our goal was to determine the optimal method for quantifying optic cup shape by comparing traditional (ovality, form-factor and neuroretinal rim (NRR) width ratio) and geo...

Journal: :iranian journal of animal biosystematics 0
safie akbarirad jamshid darvish mansour aliabadian c. william kilpatrick

calomyscus mystax is endemic to great balkhan mountains in southwestern turkmenistan. however there have been some inaccurate reports of existing this species in koprtdagh mts. and northern iran, but these were considered as calomyscus elburzensis and calomyscus grandis. phylogenetic analyses on cytb gene clustered samples from kopetdagh mts. in northeastern iran with one specimen of c. mystax ...

2010
Richard E. Strauss R. E. Strauss

A common problem in morphometric studies is to determine whether, and in what ways, two or more previously established groups of organisms differ. Discrimination of predefined groups is a very different problem than trying to characterize the patterns of morphological variation among individuals, and so the kinds of morphometric tools used for these two kinds of questions differ. In this paper ...

Journal: :Systematic biology 2013
Ursula E Smith Jonathan R Hendricks

Despite being the objects of numerous macroevolutionary studies, many of the best represented constituents of the fossil record-including diverse examples such as foraminifera, brachiopods, and mollusks-have mineralized skeletons with limited discrete characteristics, making morphological phylogenies difficult to construct. In contrast to their paucity of phylogenetic characters, the mineralize...

Journal: :American Journal of Orthodontics and Dentofacial Orthopedics 2021

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