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ARKHARAVIA

a herbivorous hadrosaurid (duck-billed) dinosaur from the Late Cretaceous of Russia.
image
Pronunciation: AHR-kuh-RAH-vee-uh
Meaning: Arkhara Road Lizard
Author/s: Alifanov and Bolotsky (2010)
Synonyms: None known
First Discovery: Amur, Russia
Chart Position: 557

Arkharavia heterocoelica

To say Arkharavia is known from modest remains would be extremely generous. Five caudals (tail bones) discovered at different levels of a bonebed in Russia's Amur Region plus a tooth fragment discovered on the outskirts of Blagoveshchensk in 1986 is what this "new for 2010" dinosaur hinges on and, based on these fossils, the authors thought it was a primitive Titanosaurian which may have resembled Argentina's Chubutisaurus insignis.

However, basing new dinosaurs on such naff remains can often lead to embaresssment and there is nothing more embaressing than having an associate point out that the holotype fossil you singled out as the property of a sauropod (in this case a vertebra) may actually belong to a hadrosaur. Oops.

Arkharavia is notable for having heterocoelous centra (saddle shaped surfaces of adjoining vertebra) - a feature found in birds and turtles which is said to afford great flexibility. Humans, on the other hand, have acoelous centra (flat surfaces of adjoining vertebra) which are ideal for supporting and distributing compressive forces.
Etymology
Arkharavia takes its name from the village of Arkhara (population around 10,000) and "via" which means "road" in Latin. We can only assume this has something to do with its place of discovery, as Alifanov's paper is a little vague.
The species epithet, heterocoelica, is a reference to the above mentioned heterocoelous... ness.
Discovery
The remains of Arkharavia were recovered from the Udur chukan Formation, Kundur, Amur region, Russia. Possibly on a road... near Arkhara (see above). This area is a bit of a hotspot for herbivorous dinosaurs having previously yielded fossils of the lambeosaurines (hollow-crested duckbills) Amurosaurus, Olorotitan and Charonosaurus, and the saurolophines (non-hollow-crested duckbills) Kerberosaurus and Wulagasaurus.
The Holotype (AEIM no. 2/418, housed at the Amur Natural History Museum) consists of five vertebrae and a supplementary tooth found in 1986.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Maastrichtian
Age range: 71-66 mya
Stats:
Est. max. length: ?
Est. max. hip height: ?
Est. max. weight: ?
Diet: Herbivore
Family Tree:
Dinosauria
Ornithischia
Cerapoda
Ornithopoda
Iguanodontia
Hadrosauridae?
Arkharavia
heterocoelica
References
• V. R. Alifanov and Y. L. Bolotsky (2010) "Arkharavia heterocoelica - a new sauropod dinosaur from the Upper Cretaceous of far eastern Russia". Paleontological Journal, Volume 44, Issue 1, pp 84-91.
• P. Godefroit, Y.L. Bolotsky and I.Y. Bolotsky (2011) "Osteology and relationships of Olorotitan arharensis, a hollowcrested hadrosaurid dinosaur from the latest Cretaceous of Far Eastern Russia". Acta Palaeontologica Polonica, Vol.57, Issue 3, p527.
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To cite this page:
Atkinson, L. "ARKHARAVIA :: from DinoChecker's dinosaur archive".
›. Web access: 29th Mar 2017.
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