Stegosauria - sympozjum
: 11 września 2010, o 16:57
Gratka dla miłośników stegozaurów: http://www.springerlink.com/content/1661-8726/
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Nie czytalem tej pracy, ale jesli to taka sama komedia, jak ten abstrakt, to dobrze, ze niektorzy recenzenci sa anonimowi...Carpenter, K. 2010. Species concept in North American stegosaurs. Suiss Journal of Geosciences. doi: 10.1007/s00015-010-0020-6
The plated thyreophoran or stegosaurian dinosaur Stegosaurus armatus was named in 1877 by Marsh for fragmentary remains from the Morrison Formation (Upper Jurassic) of Colorado, USA. Subsequent discoveries from the same formation in Wyoming and Colorado (USA) have been assigned to separate stegosaurian genera and species, but most of these are no longer considered valid. More recently, a partial stegosaurian skeleton from Wyoming was named Hesperosaurus mjosi. However, the validity of this genus has been questioned recently, raising the question: how much osteological difference among stegosaur taxa is needed to separate genera from species? The question is examined vis-à-vis species and genus recognition in other dinosaurs, including iguanodonts, lambeosaurine iguanodontids, chasmosaurine ceratopsians, tyrannosaurid theropods, and diplodocid sauropods. The basis for taxonomic distinction is largely philosophical: if the species are morphologically distinct enough, they should be treated as separate genera. Based on these criteria, Hesperosaurus mjosi is a distinct taxon.