Post by DinosaurMichael on Nov 22, 2013 21:09:45 GMT 5
Siats meekerorum
Fossil Range: Late Cretaceous, 98.5 Ma
Scientific classification
Kingdom:Animalia
Phylum: Chordata
Clade: Sauropsida
Clade: Dinosauria
Clade: Theropoda
Family: †Neovenatoridae (but see below)
Genus: †Siats
Siats is an extinct genus of large neovenatorid theropod dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, USA. It contains a single species, Siats meekerorum. S. meekerorum is the first neovenatorid discovered in North America and represents the geologically youngest allosauroid yet discovered from the continent.
Remains of the animal where collected by a 2008 expedition of the Field Museum.
It was classified as a neovenatorid, closely related to Aerosteon, Megaraptor, Australovenator and Fukuiraptor, on the basis of a phylogenetic analysis which used a matrix of 355 characters:
The position of Siats is semi strict, because a lot of material is lacking, due to the fragmentary remains. Indeed, later publications contested the classification of Siats in Zanno et al.'s publication. Later authors either classified it as a neovenatorid outside of megaraptora[1] or a coelurosaurian of uncertain placement.[2]
Sources:
www.nature.com/ncomms/2013/131122/ncomms3827/full/ncomms3827.html
Footnotes:
[1] Coria RA, Currie PJ (2016) A New Megaraptoran Dinosaur (Dinosauria, Theropoda, Megaraptoridae) from the Late Cretaceous of Patagonia. PLoS ONE 11(7): e0157973. doi.org/10.1371/journal.pone.0157973
[2] Bell et al. (2016) A large-clawed theropod (Dinosauria: Tetanurae) from the Lower Cretaceous of Australia and the Gondwanan origin of megaraptorid theropods. Gondwana Research 36, pp. 473-487. doi.org/10.1016/j.gr.2015.08.004
Fossil Range: Late Cretaceous, 98.5 Ma
Scientific classification
Kingdom:Animalia
Phylum: Chordata
Clade: Sauropsida
Clade: Dinosauria
Clade: Theropoda
Family: †Neovenatoridae (but see below)
Genus: †Siats
Siats is an extinct genus of large neovenatorid theropod dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, USA. It contains a single species, Siats meekerorum. S. meekerorum is the first neovenatorid discovered in North America and represents the geologically youngest allosauroid yet discovered from the continent.
Remains of the animal where collected by a 2008 expedition of the Field Museum.
It was classified as a neovenatorid, closely related to Aerosteon, Megaraptor, Australovenator and Fukuiraptor, on the basis of a phylogenetic analysis which used a matrix of 355 characters:
The position of Siats is semi strict, because a lot of material is lacking, due to the fragmentary remains. Indeed, later publications contested the classification of Siats in Zanno et al.'s publication. Later authors either classified it as a neovenatorid outside of megaraptora[1] or a coelurosaurian of uncertain placement.[2]
Sources:
www.nature.com/ncomms/2013/131122/ncomms3827/full/ncomms3827.html
Footnotes:
[1] Coria RA, Currie PJ (2016) A New Megaraptoran Dinosaur (Dinosauria, Theropoda, Megaraptoridae) from the Late Cretaceous of Patagonia. PLoS ONE 11(7): e0157973. doi.org/10.1371/journal.pone.0157973
[2] Bell et al. (2016) A large-clawed theropod (Dinosauria: Tetanurae) from the Lower Cretaceous of Australia and the Gondwanan origin of megaraptorid theropods. Gondwana Research 36, pp. 473-487. doi.org/10.1016/j.gr.2015.08.004
