Bystrowiana

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Bystrowiana
Temporal range: Late Permian
Bystrowiana permira1DB.jpg
Bystrowiana permira
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Reptiliomorpha
Order: Chroniosuchia
Family: Bystrowianidae
Genus: Bystrowiana
Vyushkov, 1957
Species
  • B. permira Vyushkov, 1957 (type)
  • B. sinica Young, 1979

Bystrowiana is an extinct genus of bystrowianid chroniosuchian from upper Permian deposits of Vladimir Region, Russia[1] and Jiyuan, China.[2] Chroniosuchians are often thought to be reptiliomorphs,[3] but some recent phylogenetic analyses suggest instead that they are stem-tetrapods.[4] The genus is named in honour of Dr. Alexey Bystrow, who was a Russian paleontologist. It was first named by Vyushkov in 1957 and the type species is Bystrowiana permira.[1] Two species—B. permira and B. sinica—are known.[5]

Bystrowiana is known from a 30 cm skull, which suggests it was a large animal, up to 2.5 m (8.2 ft) in total body length.[6]

References[edit]

  1. ^ a b V. K. Golubev (1998). "Narrow-armored Chroniosuchians (Amphibia, Anthracosauromorpha) from the Late Permian of Eastern Europe" (PDF). Paleontological Journal. 32 (3): 278–287. 
  2. ^ Young, C.C. (1979). "A new Late Permian fauna from Jiyuan, Honan". Vertebrata PalAsiatica. 17 (2): 99–113. 
  3. ^ Michael Buchwitz, Christian Foth, Ilja Kogan, Sebastian Voigt (2012). "On the use of osteoderm features in a phylogenetic approach on the internal relationships of the Chroniosuchia (Tetrapoda: Reptiliomorpha)". Palaeontology. 55 (3): 623–640. doi:10.1111/j.1475-4983.2012.01137.x. 
  4. ^ Laurin, M. (2010). How Vertebrates Left the Water. Berkeley, California, USA.: University of California Press. ISBN 978-0-520-26647-6. 
  5. ^ Florian Witzmann, Rainer R. Schoch and Michael W. Maisch (2008). "A relict basal tetrapod from Germany: first evidence of a Triassic chroniosuchian outside Russia" (PDF). Naturwissenschaften. 95 (1): 67–72. doi:10.1007/s00114-007-0291-6. PMID 17653527. 
  6. ^ http://tech.groups.yahoo.com/group/seymouria/message/251