Results 151 to 160 of about 276,538 (346)

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

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

open access: yesThe Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano   +3 more
wiley   +1 more source

Materials and Methods for All-Ceramic Dental Restorations Using Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) Technologies—A Brief Review

open access: yesDentistry Journal
The materials used in dentistry for the fabrication of all-ceramic restorations have undergone great and rapid developments over the last two decades.
Nestor Washington Solís Pinargote   +6 more
doaj   +1 more source

Feather Crowns (SC 1115) [PDF]

open access: yes, 2013
Finding aid and scan (Click on Additional Files below) for Manuscripts Small Collection 1115. Correspondence concerning inquiry of Tom Russell, Dallas, Texas, with Western Kentucky University personnel, Bowling Green, Kentucky, about feather crowns ...
Folklife Archives, Manuscripts &
core   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Evaluation of the Marginal Fit of Virgilite Based Lithium Disilicate Ceramic Crowns: An In-Vitro Comparative Study

open access: yesJournal of Pharmacy and Bioallied Sciences
Background: Achieving optimal marginal fit is essential for the success of Virgilite Based Lithium Disilicate Ceramic crowns. Materials and Methods: In this in-vitro study, we compared the marginal fit of Virgilite Based Lithium Disilicate Ceramic crowns
Sherif El Sayed Sultan   +3 more
doaj   +1 more source

Non‐model plants: Challenges and solutions

open access: yes
Applications in Plant Sciences, EarlyView.
José M. Cunill‐Flores   +2 more
wiley   +1 more source

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

Orthodontic management of amelogenesis imperfecta: A case report

open access: yesClinical Case Reports
Key Clinical Message Amelogenesis imperfecta (AI) is a rare developmental anomaly characterized by poorly developed or absent tooth enamel, which complicates orthodontic treatment due to weak enamel‐bracket bond strength.
Kanistika Jha   +3 more
doaj   +1 more source

The Crystal Crown [PDF]

open access: yesMayo Clinic Proceedings, 2019
Hasan Ahmad Hasan Albitar   +1 more
openaire   +2 more sources

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