Speculative life restoration of Dromomeron gregorii in a bipedal stance
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Avemetatarsalia
Clade:
Ornithodira
Clade:
†Pterosauromorpha
Family:
†Lagerpetidae Arcucci, 1986
Genera
†Dromomeron
†Faxinalipterus
†Ixalerpeton
†Kongonaphon
†Lagerpeton
†Scleromochlus?
†Venetoraptor[1]
Lagerpetidae (/ˌlædʒərˈpɛtɪdiː/; originally Lagerpetonidae) is a family of basal avemetatarsalians. Though traditionally considered the earliest-diverging dinosauromorphs (reptiles closer to dinosaurs than to pterosaurs), fossils described in 2020 suggest that lagerpetids may instead be pterosauromorphs (closer to pterosaurs).[2][3] Lagerpetid fossils are known from the Triassic of Argentina, Arizona, Brazil, Madagascar, New Mexico, and Texas.[4][5][6][7][2] They were typically small, although some lagerpetids, like Dromomeron gigas and a specimen from the Santa Rosa Formation attributed to Dromomeron sp., were able to get quite large (femoral length 150–220 mm (5.9–8.7 in)).[8][9] Lagerpetid fossils are rare; the most common finds are bones of the hindlimbs, which possessed a number of unique features.[10]
^Müller, R. T.; Ezcurra, M. D.; Garcia, M. S.; Agnolín, F. L.; Stocker, M. R.; Novas, F. E.; Soares, M. B.; Kellner, A. W. A.; Nesbitt, S. J. (2023). "New reptile shows dinosaurs and pterosaurs evolved among diverse precursors". Nature. 620 (7974): 589–594. doi:10.1038/s41586-023-06359-z.
^ abKammerer, Christian F.; Nesbitt, Sterling J.; Flynn, John J.; Ranivoharimanana, Lovasoa; Wyss, André R. (2020-07-28). "A tiny ornithodiran archosaur from the Triassic of Madagascar and the role of miniaturization in dinosaur and pterosaur ancestry". Proceedings of the National Academy of Sciences. 117 (30): 17932–17936. doi:10.1073/pnas.1916631117. ISSN 0027-8424. PMC 7395432. PMID 32631980.
^Cite error: The named reference :1 was invoked but never defined (see the help page).
^Arcucci, Andrea (1986). "New materials and reinterpretation of Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) from the Middle Triassic of La Rioja, Argentina" (PDF). Ameghiniana. 23 (3–4): 3. Archived from the original (PDF) on July 19, 2019.
^Sterling J. Nesbitt; Julia Brenda Desojo; Randall B. Irmis, eds. (2013). Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and Their Kin. The Geological Society of London. p. 164. ISBN 9781862393615. Retrieved 29 March 2016.
^Cite error: The named reference cabreira2016 was invoked but never defined (see the help page).
^Garcia, Maurício S.; Müller, Rodrigo T.; Da-Rosa, Átila A.S.; Dias-da-Silva, Sérgio (April 2019). "The oldest known co-occurrence of dinosaurs and their closest relatives: A new lagerpetid from a Carnian (Upper Triassic) bed of Brazil with implications for dinosauromorph biostratigraphy, early diversification and biogeography". Journal of South American Earth Sciences. 91: 302–319. Bibcode:2019JSAES..91..302G. doi:10.1016/j.jsames.2019.02.005. S2CID 133873065.
^Ricardo N. Martínez; Cecilia Apaldetti; Gustavo A. Correa; Diego Abelín (2016). "A Norian lagerpetid dinosauromorph from the Quebrada del Barro Formation, northwestern Argentina". Ameghiniana. 53 (1): 1–13. doi:10.5710/AMGH.21.06.2015.2894. S2CID 131613066.
^Beyl, Alexander; Nesbitt, Sterling; Stocker, Michelle R. (2020-07-07). "An Otischalkian dinosauromorph assemblage from the Los Esteros Member (Santa Rosa Formation) of New Mexico and its implications for biochronology and lagerpetid body size". Journal of Vertebrate Paleontology. 40: e1765788. doi:10.1080/02724634.2020.1765788. ISSN 0272-4634. S2CID 221751762.
^Nesbitt, S.J. (2011). "The Early Evolution of Archosaurs: Relationships and the Origin of Major Clades". Bulletin of the American Museum of Natural History. 352: 189. doi:10.1206/352.1. hdl:2246/6112. ISSN 0003-0090. S2CID 83493714.
Lagerpetidae (/ˌlædʒərˈpɛtɪdiː/; originally Lagerpetonidae) is a family of basal avemetatarsalians. Though traditionally considered the earliest-diverging...
addition to pterosaurs, Pterosauromorpha also includes the basal clade Lagerpetidae and some other Late Triassic ornithodirans (Maehary and Scleromochlus)...
difficult to determine. Small, insectivorous archosaurs of the family Lagerpetidae may potentially be examples, alongside the similar genus Scleromochlus...
that the 2020 phylogenetic analysis of Ezcurra and colleagues placed Lagerpetidae next to pterosaurs within Pterosauromorpha, removing the family from...
(2023) recovered Venetoraptor as a member of the pterosauromorph clade Lagerpetidae, as the sister taxon to 'Dromomeron' gregorii. Ixalerpeton, which has...
Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae)". PeerJ....
the back of the neck, which may be a distinguishing trait. Unlike the Lagerpetidae or Ornithodira, the hindlimbs of Teleocrater are not adapted for running;...
fossil remains and instead suggests them to belong to a member of the Lagerpetidae, another clade of pterosauromorphs. The type species, Faxinalipterus...
Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae)". PeerJ....
Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae)". PeerJ....
is ancestral to dinosaurs. Lagerpeton is the namesake of the family Lagerpetidae, a group of small avemetatarsalians which coexisted alongside dinosaurs...
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