Results 61 to 70 of about 441,604 (244)

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

open access: yesThe Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

The Maxillary Concrescent Teeth Involving an Upper Wisdom Tooth and a Supernumerary Tooth in a Completely Hierarchical Position With Dentigerous Cysts: A Case Report

open access: yesCase Reports in Dentistry
Concrescent teeth are a rare anomaly of the teeth defined as the cemental union of two or more adjacent teeth. With a frequency of 0.8% among all anomalous teeth, dentigerous cysts associated with concreted teeth are considered even rarer. In this report,
Eri Shibata   +3 more
doaj   +1 more source

The skeleton of the green Iguana iguana (Squamata: Iguanidae) and its intraspecific morphological variation

open access: yesThe Anatomical Record, EarlyView.
Abstract The green iguana (Iguana iguana) is an iguanine lizard with herbivorous and arboreal habits, whose distribution spans through South America, Central America to the south of North America. Although the genus Iguana is well‐known, the species still lacks a comprehensive and up‐to‐date anatomical study, particularly addressing the axial skeleton,
Vieno Rosa   +2 more
wiley   +1 more source

MECHANICAL PROPERTIES OF ARTIFICIAL TEETH [PDF]

open access: yes, 1993
In selecting the teeth for fabrication of complete or partial dentures, each patient s anatomic and physiologic requirements and the properties of the artificial teeth themselves should be taken into consideration.
Kazuhiro, ODAGIRI   +5 more
core   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

The roots relative fused teeth of left maxillary first molar and second molar: a case report

open access: yes口腔疾病防治, 2016
Fused teeth are one of the development abnormalities in tooth morphology which mainly occurred in the anterior teeth area and relatively rare in the posterior area.
ZHANG Ji-dong   +3 more
doaj   +1 more source

Cone beam computed tomography aided endodontic and aesthetic management of fused mandibular incisors with communicating canals

open access: yesIndian Journal of Dental Research, 2020
Endodontic treatment of fused teeth needs special care and attention due to its complex anatomy. The aim of this article is to highlight the problems encountered and the strategy in treating such cases.
Chellaswamy Savrimalai Karumaran   +5 more
doaj   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

open access: yesThe Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro   +7 more
wiley   +1 more source

Unilateral Fusion Of Teeth In Mandibular Arch - An Unusual Finding

open access: yesPakistan Journal of Medicine and Dentistry, 2022
Fusion of two teeth is rare developmental disorder which is encountered by a clinician. It is commonly reported in deciduous dentition. The fused crown appears broader and usually an esthetic concern.
Banerjee Abhishek   +4 more
doaj  

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

open access: yesThe Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom   +4 more
wiley   +1 more source

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