Histriasaurus
| Histriasaurus Temporal range: Early Cretaceous,
| |
|---|---|
| File:Histriasaurus vertebra.png | |
| Vertebra from the holotype | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Superfamily: | †Diplodocoidea |
| Family: | †Rebbachisauridae |
| Genus: | †Histriasaurus Dalla Vecchia, 1998 |
| Type species | |
| †Histriasaurus boscarollii Dalla Vecchia, 1998
| |
Histriasaurus (HIS-tree-ah-SAWR-us) (meaning "Istria lizard") is a genus of sauropod dinosaur from the Early Cretaceous (Hauterivian to Barremian stages, around 135-125 million years ago) of Croatia. It has been suggested to be a rebbachisaurid, and if so one of the oldest known members of the group.
Discovery and naming
[edit | edit source]The holotype, specimen WN V-6, was found in a bonebed in lacustrine limestone exposed on the seafloor off the coast of the town of Bale on the Istrian peninsula in Croatia by Dario Boscarolli during the 1980s, and described in 1998 by Dalla Vecchia.
The type species, H. boscarollii, was described by Dalla Vecchia in 1998.[1] The specific name honours the discoverer of the site, Darío Boscarolli. Although some authors consider Histriasaurus a dubious taxon, more recent papers support the original classification.[2]
Classification
[edit | edit source]It was a diplodocoid sauropod, related to, but more primitive than, Rebbachisaurus. Phylogenetic analyses published in 2007 and 2011 placed Histriasaurus as the most basal member of Rebbachisauridae.[3][4]
Paleoenvironment
[edit | edit source]Histriasaurus would have coexisted with an indeterminate camarasaurid, an indeterminate titanosauriform, an indeterminate somphospondylian, an indeterminate theropod, an indeterminate dinosaur of unknown classification[5] and the foraminiferan Campanellula capuensis.[6]
References
[edit | edit source]- ^ Dalla Vecchia, F. M. (1998). Remains of Sauropoda (Reptilia, Saurischia) in the Lower Cretaceous (Upper Hauterivian/Lower Barremian) limestones of SW Istria (Croatia). Geologica Croatica 51 (2): 105-134.
- ^ Apesteguía, S. (2005). "Evolution in the hyposphene-hypantrum complex within Sauropoda". In K. Carpenter & V. Tidwell (eds.), Thunder-Lizards: The Sauropodomorph Dinosaurs. Indiana University Press, Bloomington 248-267
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- ^ F. M. Dalla Vecchia. (2001). An odd dinosaur bone from the Lower Cretaceous of Istria (Croatia). Natura Nascosta 22:34-35
- ^ F. M. Dalla Vecchia. (1995). Jurassic and Cretaceous sauropod evidence in the Mesozoic carbonate platforms of the southern Alps and Dinarids. In M. G. Lockley, V. F. dos Santos, C. A. Meyer, & A. P. Hunt (eds.), Aspects of Sauropod Paleobiology. GAIA 10:65-73
External links
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- Histriasaurus at Dinosauria On-Line (Backup at WayBack Machine)
- Histriasaurus at the Paleobiology Database
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