Results 61 to 70 of about 37,221 (250)

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

Inflammatory myofibroblastic tumor parieto-occipital bone

open access: yesIndian Journal of Pathology and Microbiology, 2010
Inflammatory myofibroblastic tumor is a diverse group of lesions first described in lung and later on reported in various sites like stomach, bowel, spleen, bone.
Ghosal Nandita   +3 more
doaj  

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

Cranio-cervical conundrum; Enigmatic complete atlanto-occipital assimilation with Chairi I malformation

open access: yesRadiology Case Reports
Atlanto-occipital assimilation is extremely rare congenital anomaly, characterized by partial or complete fusion of atlas and occipital bone leading to altered cranio-cervical junction anatomy.
Khurram Khaliq Bhinder   +6 more
doaj   +1 more source

Role of soft tissue and bone interactions in the developmental integration and modularity of the skull in neural crest‐specific gap junction alpha‐1 knockout mice

open access: yesThe Anatomical Record, EarlyView.
Abstract The vertebrate skull is composed of bones derived from neural crest cells and mesoderm. The evolutionary capacity of the skull has been linked, in part, to the emergence of neural crest cells; however, this increased capacity for evolutionary change requires that variation within neural crest‐ and mesoderm‐derived bones remains partly ...
Alyssa C. Moore   +5 more
wiley   +1 more source

The size and shape of the foramen magnum in man

open access: yesJournal of Craniovertebral Junction and Spine, 2017
Background: The foramen magnum (FM) has garnered broad interest across the disciplines of anthropology, comparative anatomy, evolutionary biology, and clinical sciences.
Matthew J Zdilla   +4 more
doaj   +1 more source

An osteohistological analysis of Triceratops (Ornithischia: Ceratopsidae) cranial ornamentation

open access: yesThe Anatomical Record, EarlyView.
Abstract Ceratopsids are among the most distinctive and well known extinct Cretaceous vertebrates, yet many details regarding the growth and composition of their cranial features are still not fully anatomically described or understood. In particular, striking cranial adornments such as the postorbital horns and parietal‐squamosal frill of Triceratops ...
Kyle D. Obuszewski   +2 more
wiley   +1 more source

Unusual occipital condyles of the skull: an osteological study with clinical implications

open access: yesSão Paulo Medical Journal
CONTEXT: The occipital condyles of the skull articulate with the superior articular facets of the atlas vertebra and form an important junction between the cranium and the vertebral column. The morphological features of occipital condyles are relevant in
Srijit Das, Rajesh Suri, Vijay Kapur
doaj   +1 more source

Morphology and morphometry of the foramen magnum in Toy Poodle and Yorkshire terrier dogs Morfologia e morfometria do forame magno em cães das raças Poodle Toy e Yorkshire terrier

open access: yesCiência Rural, 2011
The occipital dysplasia has been characterized by a dorsal enlargement of the foramen magnum which can vary in size and shape. Clinical signs may be present or not in animals with occipital dysplasia.
Carina Outi Baroni   +4 more
doaj   +1 more source

Chiari malformation with thick occipital bone.

open access: yesActa medica Okayama, 2011
A case of a Chiari malformation with an extraordinarily thick occipital bone is described. The thick occipital bone might make the posterior fossa narrow with consequent herniation of the cerebellar tonsils to the foramen magnum and formation of a syrinx. At dural plasty, well-developed marginal and occipital sinuses should be deliberately handled with
Yasuhara, Takao   +2 more
openaire   +3 more sources

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