Cardiovascular evidence for an intermediate or higher metabolic rate in an ornithischian dinosaur.
Computerized tomography scans of a ferruginous concretion within the chest region of an ornithischian dinosaur reveal structures that are suggestive of a four-chambered heart and a single systemic aorta. The apparently derived condition of the cardiovascular system in turn suggests the existence of intermediate-to-high metabolic rates among dinosaurs.
Fisher
P E
PE
Biomedical Imaging Facility, College of Veterinary Medicine, North Carolina State University, 4700 Hillsborough Street, Raleigh, NC 27606, USA. PaulvFisher@ncsu.edu
Russell
D A
DA
Stoskopf
M K
MK
Barrick
R E
RE
Hammer
M
M
Kuzmitz
A A
AA
D000818:Animals; D001011:Aorta / Q000033:anatomy & histology; D001481:Basal Metabolism; D001717:Birds / Q000033:anatomy & histology / Q000378:metabolism; D001835:Body Weight; D005580:Fossils; D006321:Heart / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D007091:Image Processing, Computer-Assisted; D058085:Iron Compounds / Q000032:analysis; D008903:Minerals; D010163:Paleontology; D012104:Reptiles / Q000033:anatomy & histology* / Q000378:metabolism*; D015898:Tomography Scanners, X-Ray Computed; D014057:Tomography, X-Ray Computed; D014961:X-Ray Diffraction
D058085:Iron Compounds; D008903:Minerals; C094886:goethite