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Harpactognathus

Harpactognathus
Temporal range: Late Jurassic,
Kimmeridgian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Family: Rhamphorhynchidae
Subfamily: Rhamphorhynchinae
Genus: Harpactognathus
Carpenter et al., 2003
Species:
H. gentryii
Binomial name
Harpactognathus gentryii
Carpenter, et al., 2003

Harpactognathus (meaning "seizing/grasping jaw") is a genus of pterosaur found in the Late Jurassic-age Morrison Formation of Albany County, Wyoming, United States. It is based on NAMAL 101, a partial skull consisting of the snout, recovered from near Bone Cabin Quarry in 1996. The specific name honors the discoverer, Joe Gentry, a volunteer for the Western Paleontological Laboratories, in Lehi, Utah.[1]

The holotype of Harpactognathus consists of a partial rostrum.[1] Its describers found it to be most similar to Scaphognathus among pterosaurs, albeit substantially larger (estimated skull length of 280–300 mm (11–12 in), estimated wingspan of at least 2.5 m (8.2 ft). Because of the similarity, Harpactognathus was assigned to the subfamily Scaphognathinae of the family Rhamphorhynchidae. This genus is also notable for having a low bony crest running all the way to the tip of the beak (pterosaur bone crests usually do not reach the tip) and for being the oldest known Morrison Formation pterosaur, having been found in the Salt Wash Member (Kimmeridgian).[1]

The holotype resides in the Stewart Museum of Paleontology at Ogden's George S. Eccles Dinosaur Park in northern Utah.

Paleobiology

The authors hypothesized that Scaphognathines specialized as aerial predators in inland freshwater habitats. However, more recent publications have suggested scaphognathines lacked specializations for piscivory, and were likely terrestrial predators of small vertebrates or corvid-like generalists.[2]

See also

References

  1. ^ a b c Carpenter, K., Unwin, D.M., Cloward, K., Miles, C.A., and Miles, C. (2003). A new scaphognathine pterosaur from the Upper Jurassic Formation of Wyoming, USA. In: Buffetaut, E., and Mazin, J.- M. (eds.). Evolution and Palaeobiology of Pterosaurs. Geological Society of London, Special Publications 217:45-54.
  2. ^ Witton, Mark (2013). Pterosaurs: Natural History, Evolution, Anatomy. Princeton University Press. p. 51. ISBN 978-0691150611.

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