| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Colhuehuapisuchus
Taxonomy
Colhuehuapisuchus was named by Lamanna et al. (2019).
It was assigned to Peirosauridae by Lamanna et al. (2019), Ibiricu et al. (2020); and to Mahajangasuchidae by Ruiz et al. (2024).
It was assigned to Peirosauridae by Lamanna et al. (2019), Ibiricu et al. (2020); and to Mahajangasuchidae by Ruiz et al. (2024).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Colhuehuapisuchus Lamanna et al. |
| 2020 | Colhuehuapisuchus Ibiricu et al. p. 15 |
| 2024 | Colhuehuapisuchus Ruiz et al. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Colhuehuapisuchus Lamanna et al. 2019
show all | hide all
†Colhuehuapisuchus lunai Lamanna et al. 2019
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. C. Lamanna et al. 2019 | Peirosaurid mesoeucrocodylian crocodyliform characterized by the following unique combination of characters (proposed autapomorphies indicated by asterisks): (1) anterior end of mandible proportionally wider transversely than in all other definitive peirosaurids* (including other ‘broad-snouted’ taxa such as Barrosasuchus neuquenianus, Gasparinisuchus peirosauroides, Patagosuchus anielensis, and Uberabasuchus terrificus); (2) anterior end of mandible lacking transverse constriction in region of sixth–eighth alveoli when observed in dorsal (i.e., occlusal) or ventral view*; (3) mandibular symphysis extends to tenth alveolus (shared with Bayomesasuchus hernandezi and Montealtosuchus arrudacamposi but longer than in Barcinosuchus gradilis, Barr. neuquenianus, and G. peirosauroides and shorter than in Hamadasuchus rebouli, Kinesuchus overoi, and probably Itasuchus jesuinoi, Pa. anielensis, and Pepesuchus deiseae); (4) dentary–splenial suture broadly rounded rather than pointed in dorsal view (shared with Barr. neuquenianus, G. peirosauroides, and Pa. anielensis but not H. rebouli, I. jesuinoi, K. overoi, or Pe. deiseae; Bay. hernandezi and M. arrudacamposi show an intermediate condition); (5) splenial comprises approximately one-third of mandibular symphysis in dorsal view (shared with M. arrudacamposi but greater than in Barr. neuquenianus, G. peirosauroides, and Pe. deiseae and less than in Bay. hernandezi, H. rebouli, K. overoi, and Pa. anielensis); (6) mesialmost (i.e., first and second) dentary teeth strongly procumbent, such that their crowns are oriented nearly horizontally in medial or lateral view*; (7) first dentary tooth with mesial and distal carinae situated on shelf-like ridge that is ‘set off’ from main body of crown by shallow groove*; (8) dentary teeth distal to the fourth (‘postcaniniforms’) low, blunt-crowned, and globular (shared with Barr. neuquenianus, G. peirosauroides, Lomasuchus palpebrosus, M. arrudacamposi, Pa. anielensis, and U. terrificus but not Barc. gradilis, H. rebouli, I. jesuinoi, K. overoi, and Pepesuchus spp.). Colhuehuapisuchus lunai also exhibits the following morphologies that occur in most or all known peirosaurids: (9) mandible with festooned alveolar margin; (10) dentary ornamented with pits and vermiform grooves; (11) splenial participates in mandibular symphysis; (12) teeth ziphodont and pseudoheterodont (teeth of Pepesuchus spp. are not ziphodont in that they lack denticles). |
Measurements
No measurements are available
|
|
||||
|
|||||
|
|||||
|
|
||||
| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009, Bush and Bambach 2015, Kiessling 2004, Benton 1983 | |||||
Age range: base of the Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Campanian - Early/Lower Maastrichtian | Argentina (Chubut) | Crocodyliformes indet. (52909) |