Sinomacrops
| Sinomacrops | |
|---|---|
| |
| Holotype specimen of Sinomacrops (JPM-2012-001) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Pterosauria |
| Family: | †Anurognathidae |
| Subfamily: | † Batrachognathinae
|
| Genus: | †Sinomacrops Wei et al., 2021 |
| Type species | |
| †Sinomacrops bondei Wei et al., 2021
| |
Sinomacrops is a
anurognathid pterosaur from the Middle to Late Jurassic periods of what is now the Daohugou Beds of the Tiaojishan Formation in Mutoudeng, Qinglong County of the Hebei province. The remains of Sinomacrops date back to around 164 to 158 million years ago. The type and only known species is Sinomacrops bondei.[1]
Etymology
Sinomacrops derives from the
paleontologist Niels Bonde.[1]
Description
Sinomacrops exhibits two
autapomorphies (distinguishing traits) that distinguish it from other pterosaurs: one of them is having the first three maxillary alveoli (tooth sockets) closely spaced, and the other one is having the tibiotarsus twice as long as the femur.[1]
The
caudal vertebrae, the sternum, the distal (away from the point attachment) epiphysis (rounded end of a long bone) of the right humerus, proximal (near the point of attachment) epiphyses of both the right ulna and radius, parts of the left humerus, as well as most of the left manus (hand).[1]
The skeleton of Sinomacrops includes patches of soft tissue. A strange patch of soft tissue lateral (to the side) to the left tibiotarsus suggests that the
Jeholopterus ningchengensis, which is a close relative of Sinomacrops, this feature also appears in all pterosaurs in general.[1]
Classification
Life restoration
of SinomacropsIn its description in 2021, Wei and colleagues assigned Sinomacrops to the subfamily
phylogenetic analysis
:
| Anurognathidae |
| ||||||||||||||||||||||||||||||||||||||||||
References
- ^ PMC 8019321.
