Record-Breaking Pain: The Largest Number and Variety of Forelimb Bone Maladies in a Theropod Dinosaur

Autor: Phil Senter, Sara L. Juengst
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Critical Care and Emergency Medicine
Pectoral girdle
Physiology
lcsh:Medicine
Biochemistry
01 natural sciences
Dinosaurs
0403 veterinary science
Scapula
Forelimb
Medicine and Health Sciences
lcsh:Science
Musculoskeletal System
Trauma Medicine
Multidisciplinary
biology
Physics
Classical Mechanics
Prehistoric Animals
04 agricultural and veterinary sciences
Anatomy
musculoskeletal system
Deformation
medicine.anatomical_structure
Bone Fracture
Vertebrates
Physical Sciences
Bone Remodeling
Bone Diseases
Traumatic Injury
Research Article
010506 paleontology
animal structures
040301 veterinary sciences
Bone and Mineral Metabolism
Theropoda
Birds
stomatognathic system
medicine
Animals
Humerus
Skeleton
0105 earth and related environmental sciences
Damage Mechanics
Dilophosaurus
Ulna
lcsh:R
Organisms
Biology and Life Sciences
Paleontology
Reptiles
Bone fracture
medicine.disease
biology.organism_classification
body regions
Metabolism
Earth Sciences
lcsh:Q
Physiological Processes
Zdroj: PLoS ONE, Vol 11, Iss 2, p e0149140 (2016)
PLoS ONE
ISSN: 1932-6203
Popis: Bone abnormalities are common in theropod dinosaur skeletons, but before now no specimen was known with more than four afflicted bones of the pectoral girdle and/or forelimb. Here we describe the pathology of a specimen of the theropod dinosaur Dilophosaurus wetherilli with eight afflicted bones of the pectoral girdle and forelimb. On its left side the animal has a fractured scapula and radius and large fibriscesses in the ulna and the proximal thumb phalanx. On its right side the animal has abnormal torsion of the humeral shaft, bony tumors on the radius, a truncated distal articular surface of metacarpal III, and angular deformities of the first phalanx of the third finger. Healing and remodeling indicates that the animal survived for months and possibly years after its ailments began, but its right third finger was permanently deformed and lacked the capability of flexion. The deformities of the humerus and the right third finger may be due to developmental osteodysplasia, a condition known in extant birds but unreported in non-avian dinosaurs before now.
Databáze: OpenAIRE
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