Skybalonyx

Extinct genus of reptiles

Skybalonyx is an extinct genus of drepanosaur from the Chinle Formation in the Late Triassic. The type and only known species is Skybalonyx skapter, meaning "digging dung claw" from Ancient Greek, in reference to the association of this taxon's claws with coprolites, or fossilized dung. Skybalonyx is only known from numerous specimens of the enlarged claw on its second finger, characteristic of other derived drepanosaurids. However, Skybalonyx is unique compared to other drepanosaurs because its enlarged claw is wider than it is tall, and it is not as deep compared to those of the contemporary Drepanosaurus or Ancistronychus. Furthermore, the paired articular condyles of the ungual of this taxon remain distinct, unlike later drepanosaurids that often possess confluent articular condyles.

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