Talenkauen
Talenkauen | |
---|---|
Holotype MPM-10001 | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | †Ornithischia |
Clade: | †Ornithopoda |
Clade: | †Elasmaria |
Genus: | †Talenkauen Novas et al. 2004 |
Species: | †T. santacrucensis
|
Binomial name | |
†Talenkauen santacrucensis Novas et al. 2004
|
Talenkauen is a
Discovery and naming
One among a string of discoveries of ornithopods in South America, following taxa such as
It has been recognized that, nestled amongst the rock matrix of the holotype specimen, are a collection of minuscule bone fragments and teeth. Identifiable as the teeth of some degree of ornithopod, and associated with the adult specimen, this is considered to be a neonatal, or recently hatched, baby specimen of Talenkauen. It was described in a 2013 paper, which separated the specimen number MPM–10001 into MPM–10001A, for the adult specimen, and MPM–10001B, for the neonate. The specimen is one of only very few embryonic or hatchling ornithopod specimen, and was the very first discovered from the southern hemisphere. Wear on the tiny, 1.7mm wide tooth crowns indicate the individual had fed, meaning it was not an embryo and had hatched, but only recently before death. It was noted as possible that the adult had been practicing parental care due to the individuals being found together, but that more concrete evidence would be needed to confidently make such an assertion.[3]
Description
Talenkauen was rather like
Talenkauen is most noted for a set of smooth,
Classification
Through
The simplified cladogram below results from analysis by Rozadilla et al., 2019, showing all members of Elasmaria forming a polytomy.[9]
Clypeodonta
|
|
Palaeoecology
Talenkauen, as a basal ornithopod, would have been a small,
References
Notes
- ^ Talenkauen was originally reported as being from the "Pari Aike Formation" and later reported as instead being from the Mata Amarilla Formation.[4] Geological studies found several names were being used for the same rock layers and advised use of the name Ceroo Fortaleza Formation over the former two as they were associated with incorrect dates or also used for other units.[1]
Citations
- ^ .
- ^ a b c d e f g h i Novas, Fernando E.; Cambiaso, Andrea V; Ambrioso, Alfredo (2004). "A new basal iguanodontian (Dinosauria, Ornithischia) from the Upper Cretaceous of Patagonia". Ameghiniana. 41 (1): 75–82.
- ^ hdl:11336/8680.
- ^ S2CID 155344014.
- ^ .
- OCLC 985402380.
- ^ .
- ^ a b Calvo, J.O.; Porfiri, J.D.; Novas, F.E. (2007). "Discovery of a new ornithopod dinosaur from the Portezuelo Formation (Upper Cretaceous), Neuquén, Patagonia, Argentina". Arquivos do Museu Nacional. 65 (4): 471–483.
- S2CID 155344014.
- ISBN 978-0-520-24209-8.
- .
- .
External links
- National Geographic news release on Talenkauen; the National Geographic Society was one of the supporters of the research on this dinosaur.