Results 41 to 50 of about 5,502 (265)

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

The ID of the Supernumerary Tooth

, 2023
Teeth Numbering Systems help in easy communication and documentation of the tooth or teeth of concern. They are devised in a manner in which their implementation is easy. However, confusion arises when there is an additional tooth in the arch. This article explains how a supernumerary tooth is numbered.
openaire   +2 more sources

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

Supplemental Mandibular Mesiodens: A Diagnostic Challenge [PDF]

Journal of Clinical and Diagnostic Research, 2013
Developmental anomalies affecting the number of teeth are occasionally encountered clinically. The incidence of supernumerary teeth is approximately 1–3%.
Manjunath Naganahalli, Adarsh Honnappa, Nallan CSK Chaitanya   +2 more
doaj   +1 more source

Fusion of Unerupted Mesiodens with a Regular Maxillary Central Incisor: a Diagnostic and Therapeutic Challenge

Acta Stomatologica Croatica, 2021
The mesiodens is the most frequent type of supernumerary tooth which can appear in the maxillary midline area. The etiology of mesiodentes is not fully understood.
Zdenko Šarac, Ružica Zovko, Stipo Cvitanović, Kristina Goršeta, Domagoj Glavina   +4 more
doaj   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

An Intranasal Ectopic Tooth In A Child

International Dental Journal
Introduction: A supernumerary tooth refers to a duplication of teeth in the normal series. It is a developmental anomaly, most commonly located in the maxillary anterior region.
Mingzhe Li
doaj   +1 more source

FAM20B-catalyzed glycosaminoglycans control murine tooth number by restricting FGFR2b signaling

BMC Biology, 2020
Background The formation of supernumerary teeth is an excellent model for studying the molecular mechanisms that control stem/progenitor cell homeostasis needed to generate a renewable source of replacement cells and tissues.
Jingyi Wu, Ye Tian, Lu Han, Chao Liu, Tianyu Sun, Ling Li, Yanlei Yu, Bikash Lamichhane, Rena N. D’Souza, Sarah E. Millar, Robb Krumlauf, David M. Ornitz, Jian Q. Feng, Ophir Klein, Hu Zhao, Fuming Zhang, Robert J. Linhardt, Xiaofang Wang   +17 more
doaj   +1 more source

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Loss, persistence and reversal of phenotypic traits

Biological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni, Giuseppe Fusco, Filippo Nicolini, Heather Bruce, Andrea Luchetti   +4 more
wiley   +1 more source