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Theropod bite marks on dinosaur bones (free pdf)



Ben Creisler
bcreisler@gmail.com


A recent paper with a free pdf:

Robert F. Robinson, Steven E. Jasinski, and Robert M. Sullivan (2015)
Theropod bite marks on dinosaur bones: indications of a scavenger,
predator, or both?; and their taphonomic implications.
New Mexico Museum of Natural History and Science Bulletin 67:275-282
http://www.stevenjasinski.com/uploads/37_-_Robinson_et_al-2015-NMMNHSB-Theropod_bite_marks_on_dinosaur_bones__indications_of_a_scavenger__predator_or_.pdf


Three nearly complete, isolated vertebrae, and a right humerus of a
sub-adult hadrosaurine (Ornithopoda: Hadrosaurinae), all from separate
individuals and from the Late Cretaceous (late Campanian) Hunter Wash
local fauna (Fruitland Formation [Fossil Forest Member] and Kirtland
Formation [Hunter Wash Member]), San Juan Basin, New Mexico, bear
distinctive bite marks. These bite marks vary in size and shape,
suggesting that different species of theropods, or possibly different
ontogenetic individuals of a single species, were feeding on the
carcasses pertaining to these individual elements. The isolated
vertebrae suggest post-mortem bites, probably from scavenging
behavior, whereas the bite marks on the humerus may have been
inflicted during predation. Based on the bite mark traces, it appears
that all bite marks were made by tyrannosauroids of different
ontogenetic stages and/or different species.