Pterosauromorpha
Pterosauromorphs | |
---|---|
Skeletal restoration of Lagerpeton chanarensis (known elements represented in white) | |
Skeletal restoration of Dimorphodon macronyx | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Ornithodira |
Clade: | †Pterosauromorpha Kuhn-Schnyder & Rieber, 1986 |
Subgroups | |
Pterosauromorpha (meaning "pterosaur-like forms") is one of the two basic divisions of
Classification
The name Pterosauromorpha was originally coined by Emil Kuhn-Schnyder and Hans Rieber (1986) for a
Lagerpetidae was traditionally considered the earliest diverging group of dinosauromorphs. This caused no other reptiles besides the true pterosaurs to be placed in Pterosauromorpha.[10][11] The only notable exception was a small reptile named Scleromochlus, whose placement within the clade itself remained controversial due the poor preservation of its otherwise complete remains. Different phylogenetic analyses found it as a basal pterosauromorph,[4][5] a non-aphanosaurian, non-pterosaur basal avemetatarsalian, a basal dinosauromorph,[11] or a basal archosauriform.[12] This has resulted in a large gap between the fully aerial pterosaurs and their terrestrial ancestors, as the earliest pterosaurs were already capable flyers.[11]
First iteration of phylogenetic analysis produced by Kammerer et al. (2020) restored lagerpetids as a basal dinosauromorphs, which corresponds to the traditional point of view. But the second iteration, in which were added Scleromochlus, found Lagerpetidae as the most basal pterosauromorphs, and Scleromochlus as the
It has to do with the semicircular canals [in the ear], which orients you in 3D space. The shape of those canals correlates with ecology and how you move your head — basically, are you agile or not? And a lot of things that have flight have semicircular canals with a really large and characteristic [shape] because you're flying, you're in a lot more 3D space.
Kellner et al. (2022) described Maehary, a small ornithodiran from the Late Triassic of Brazil. It was interpreted as a basal pterosauromorph (along with lagerpetids). It is noteworthy that left maxilla of Maehary was previously considered to be a specimen of Faxinalipterus that was re-classified as a lagerpetid.[7]
Nesbitt et al. (2011)[10]
|
Ezcurra et al. (2020)[5]
|
Kellner et al. (2022)[7]
|
References
- PMID 26644579.
- ^ ISBN 978-0-12-226810-6.
- ^ ISBN 978-1-138-33293-5.
- ^ PMID 32631980.
- ^ S2CID 228077525.
- ^ ISSN 0012-8252.
- ^ PMID 35529502.
- ^ Kuhn-Schnyder, E.; Rieber, H. (1986). Handbook of Paleozoology. Baltimore, MD: Johns Hopkins University Press.
- ^ "Pterosauromorpha". RegNum. Retrieved 30 May 2022.
- ^ S2CID 83493714.
- ^ S2CID 9095072.
- PMID 32117608.
- ^ ""Missing Link" in Pterosaurs' Family Tree Has Been Identified". Mysterious Universe. Jocelyne LeBlanc. December 16, 2020.