Results 301 to 310 of about 111,864 (405)

Skull morphology and histology indicate the presence of an unexpected buccal soft tissue structure in dinosaurs

open access: yesJournal of Anatomy, EarlyView.
A combined approach of osteology and histology was used to examine the cheek regions of dinosaurs. Strong evidence was found for a soft tissue in this region connecting the zygoma to the mandible, here named the ‘exoparia’. Abstract Unlike mammals, reptiles typically lack large muscles and ligaments that connect the zygoma to the mandible.
Henry S. Sharpe   +7 more
wiley   +1 more source

Epidermal scale growth, allometry and function in non‐avian dinosaurs and extant reptiles

open access: yesJournal of Anatomy, EarlyView.
Scale shapes in non‐avian dinosaurs and extant reptiles are mostly retained through growth. However, positive scale allometry and proportional differences in scale breadth are also detected, which are likely associated with changing body proportions. Based on their generally conserved morphology and impracticality for visual display, the enlarged size ...
Nathan James Enriquez   +3 more
wiley   +1 more source

Exploring craniofacial fluctuating asymmetry in a South African sample

open access: yesJournal of Anatomy, EarlyView.
This study investigated craniofacial fluctuating asymmetry (FA) in a contemporary South African sample using micro‐XCT scans. Inter‐landmark distances (ILDs) assessed size variation, while geometric morphometric methods (GMMs) captured shape variation.
Miksha Harripershad   +3 more
wiley   +1 more source

Osteohistological analysis of metatarsals reveals new information on pathology and life history of troodontids from the Campanian Dinosaur Park Formation, Alberta, Canada

open access: yesJournal of Anatomy, EarlyView.
A histological survey of troodontid metatarsals from the Dinosaur Park Formation (DPF) was conducted, revealing correlates for stresses in the troodontid arctometatarsus and providing the first histological assessment of pathologies for this taxon.
Christiana W. Garros   +3 more
wiley   +1 more source

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