Velocimlical

Velocimlical is a hypothetical genus of extinct theropod dinosaur proposed in a 2017 scientific paper. The name is derived from the Latin word "veloci," meaning swift, and "calix," meaning cup, referring to the distinctive cup-shaped depressions on the dorsal surface of the caudal vertebrae. The genus is based on a single partial skeleton discovered in the Late Cretaceous formations of Mongolia.

Fossil evidence suggests velocimlical was a relatively small dromaeosaurid, measuring approximately 1.5 to 2 meters in length. Its morphology indicates it was a bipedal carnivore, likely possessing the characteristic sickle-shaped claw on the second toe of each foot, common to many dromaeosaurs. Analysis of the skeletal remains suggests adaptations for agility and speed, supporting its placement within the velociraptorine subfamily.

The holotype specimen of velocimlical is notable for its exceptionally well-preserved tail vertebrae, which exhibit unique pneumatic features and the aforementioned cup-shaped depressions. These features are interpreted by researchers as potentially aiding in reducing weight or as sites for muscle attachment. Further research is required to fully understand the paleobiology and phylogenetic relationships of velocimlical within the broader context of theropod evolution. The discovery of this genus contributes to our understanding of dromaeosaurid diversity during the Late Cretaceous in Asia.