Results 131 to 140 of about 29,926 (292)

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Dental age estimation from panoramic X-ray images using statistical models

, 2017
This paper presents an application of computer vision methods to dental age estimation based on the lower third right molar in panoramic X-ray images. For this purpose, two statistical computer vision models are adjusted and applied: Active Shape Model ...
Vodanović, Marin, Viktorija Sajkovic, Marin Vodanovic, Subašić, Marko, Čular, Luka, Tomaić, Mia, Šarić, Tea, Luka Cular, Sajković, Viktorija, Mia Tomaic, Tea Saric, Marko Subasic   +11 more
core   +1 more source

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

The Anatomical Record, EarlyView.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey, Eloy Gálvez‐López, Anthony Herrel, Laura B. Porro   +3 more
wiley   +1 more source

Machine learning approach for adult age estimation using dental characteristics on panoramic radiographs

Scientific Reports
Dental characteristics are increasingly considered valuable indicators for adult age estimation in forensic and clinical contexts, yet conventional methods struggle with complex dental data.
Donghwan Lee, Sehyun Oh, Seyeon Hwang, Jiae Park, Yujin Oh, Akiko Kumagai, Sang-Seob Lee   +6 more
doaj   +1 more source

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

The Anatomical Record, EarlyView.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

How to estimate dental age in paleodontology?

Bulletin of the International Association for Paleodontology, 2010
Nowadays there are many methods available for dental age estimation: morphological, radiological, biochemical. Some methods require sample sectioning while other non-destructive methods are more appropriate for use in paleodontology. Children’s dental age assessment is based on phases in growth and development of the deciduous and permanent dentition ...
Šebečić, Vedran, Hoch, Andrea, Sabalić, Maja   +2 more
openaire   +1 more source

A comparison of four methods of dental age estimation and age estimation from the Risser sign of the iliac crest

, 2016
Age estimation techniques are of medicolegal importance for estimating the age of living asylum seekers. as well as for unidentified human remains from forensic cases.
Goltz, Rebekah A.
core  

Morphometric analysis of postnatal lung development in the gray short‐tailed opossum (Monodelphis domestica): An ultrastructural study

The Anatomical Record, EarlyView.
Abstract An ultrastructural morphometric analysis of the postnatal development of the lung in the gray short‐tailed opossum (Monodelphis domestica) has been conducted to evaluate the morphofunctional status of this poorly developed marsupial lung immediately following parturition.
Kirsten Ferner
wiley   +1 more source

Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs

The Anatomical Record, EarlyView.
Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy, Alice Nishigaki, Matthew C. Gage, Renato L. Previdelli   +3 more
wiley   +1 more source

Tooth formation in Sudanese children

, 2011
PhDThe aim of this study was to describe the average age of permanent mandibular tooth formation in two groups of Sudanese children using a cross-sectional design following STROBE guidelines.
Elamin, Fadil
core