About: Utahdactylus   Sponge Permalink

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The genus was named and described in 2002 by Stephen Czerkas and Debra Mickelson. The type species is Utahdactylus kateae. The genus name is derived from Utah and Greek daktylos, "finger". The specific name means "for Kate", referring to Kate Mickelson. The holotype consists of some disarticulated bone fragments preserved on several chalkstone blocks. It is housed in the Dinosaur Museum, run by Czerkas himself.

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  • Utahdactylus
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  • The genus was named and described in 2002 by Stephen Czerkas and Debra Mickelson. The type species is Utahdactylus kateae. The genus name is derived from Utah and Greek daktylos, "finger". The specific name means "for Kate", referring to Kate Mickelson. The holotype consists of some disarticulated bone fragments preserved on several chalkstone blocks. It is housed in the Dinosaur Museum, run by Czerkas himself.
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  • The genus was named and described in 2002 by Stephen Czerkas and Debra Mickelson. The type species is Utahdactylus kateae. The genus name is derived from Utah and Greek daktylos, "finger". The specific name means "for Kate", referring to Kate Mickelson. The holotype consists of some disarticulated bone fragments preserved on several chalkstone blocks. It is housed in the Dinosaur Museum, run by Czerkas himself. The specimen was first described as a pterosaur, with a long tail and an estimated wingspan of 1.20 meters (3.94 feet). The authors considered it to be a "rhamphorhynchoid", i.e. a basal pterosaur, due to its long tail and large but not elongate cervical vertebrae, but without the typical groove in its forelimb bones.[1] It was regarded as a "rhamphorhynchoid" based on an unprepared specimen in the most recent review of Morrison pterosaurs.[2] In 2007, pterosaur specialist Chris Bennett published a redescription wherein he disagreed with Czerkas' and Mickelson's conclusions. He found several of the bone identifications and interpretations to be mistaken, such as the skull bone (interpreted here as just a bone fragment of unknown origin), elongate tail vertebra (the presumed elongated extensions were ribs), humerus (unknown), and the orientation of the bone described as a scapulacoracoid (the scapula and coracoid parts had been confused). He could not locate other bones seen as impressions, and found no evidence to suggest that the identifiable bones came from a pterosaur. In fact, he found the general quality of the bone texture to differ from that of pterosaur bones. He concluded by classifying it as Diapsida incertae sedis, and a dubious name, adding an exhortation not to name pterosaurs from material lacking unequivocal pterosaur characters
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