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BAYOSAURUS

a meat-eating abelisauroid theropod dinosaur from the Late Cretaceous of Argentina.
Pronunciation: BAH-sho-SOR-us
Meaning: Bay lizard
Author/s: Coria, Currie and Carabajal (2006)
Synonyms: None known
First Discovery: Neuquén, Argentina
Chart Position:

"Bayosaurus"

The Argentinean abelisauroid fossil record begins with Ligabueino in the Early Cretaceous and spans through the earliest Late Cretaceous with Ilokelesia, Xenotarsosaurus, and Ekrixinatosaurus from the Cenomanian to the latest Late Cretaceous with Abelisaurus, Carnotaurus, Aucasaurus, and Noasaurus from the Campanian–Maastrichtian. Unfortunately, there's a 10 million year period (Turonian-Coniacian-Santonian, or 94-84 mya of the Late Cretaceous) where remnants of these weird ceratosaurian theropods are sadly lacking in Argentina, and that's sad, being as this is a period when most other theropod groups were undergoing their most dramatic transformations.

The purported Argentinean abelisauroid "Bayosaurus" could perhaps add a few sentences to this utterly important missing chapter of its family evolution, but has yet to be officially described and so languishes with the riff-raff in nomina nuda. Heck, it's been pretty much ignored since its discovery in 2000, with only one group of authors—Coria, Currie and Carabajal, a decade ago as of 2016—affording it any attention, and even they didn't bother to give it a scientific name. Therefore, despite its potential importance, "Bayosaurus" is officially unofficial, and until that changes it's fated to spend eternity enclosed in quotation marks.
Etymology
We're guessing "Bayosaurus" is derived from "Bayo" (for Cerro Bayo Mesa, meaning "Bay Mountain plateau", where it was discovered) and the Greek "sauros" lizard).
A species epithet has not been assigned.
Discovery
The remains of "Bayosaurus" were discovered in the middle section of the Lisandro Formation at Cerro Bayo Mesa, Neuquén Province, Argentina, in 2000. Its remains, catalogued as MCF-PVPH-237, include vertebrae from the back and hip, a fragmentary pelvis, and some other fragments.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Turonian
Age range: 94-89 mya
Stats:
Est. max. length: 4 meters
Est. max. hip height: ?
Est. max. weight: 200 Kg
Diet: Carnivore
Family Tree:
Dinosauria
Saurischia
Theropoda
Neotheropoda
Ceratosauria
Abelisauroidea
"Bayosaurus"
(unofficial)
References
• Coria RA, PJ Currie and AP Carabajal (2006) "A new abelisauroid theropod from Northwestern Patagonia". Canadian Journal of Earth Sciences 43: 1283–1289.
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To cite this page:
Atkinson, L. "BAYOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 21st Aug 2017.
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