Crichtonsaurus: Difference between revisions

A second species, ''Crichtonsaurus benxiensis'', was named by [[Lü Junchang]], Ji Qiang, Gao Yubo and Li Zhixin in 2007. The specific name refers to the [[Benxi Geological Museum]]. The holotype, '''BXGMV0012''', was discovered in the same early [[Late Cretaceous]]-age ([[Cenomanian]]-[[Turonian]]) [[Sunjiawan Formation]] of [[Beipiao]], [[Liaoning]], as the type species. It consists of a complete skull. Additionally, specimen BXGMV0012-1 has been referred, a partial skeleton lacking the skull, found at the same location.<ref name=Luetal07>{{cite journal |doi=10.1111/j.1755-6724.2007.tb01010.x |author=Lü Junchang |author2=Ji Qiang |author3=Gao Yubo |author4= Li Zhixin |year=2007 |title=A new species of the ankylosaurid dinosaur ''Crichtonsaurus'' (Ankylosauridae:Ankylosauria) from the Cretaceous of Liaoning Province, China |journal=Acta Geologica Sinica (English edition) |volume=81 |issue=6 |pages=883–897 }}</ref><ref>http://dml.cmnh.org/2002Nov/msg00398.html</ref> Also, according to Arbour, a skeleton displayed at the [[Sihetun Fossil Museum]] under the name of ''C. bohlini'', probably belongs to ''C. benxiensis''.<ref name="Arbour2014"/> Paul suggested ''C. benxiensis'' were a [[junior synonym]] of ''C. bohlini''.<ref name="Paul2010"/> However, apart from indicating ''C. bohlini'' as a dubious species to which no other species can be justifiably seen as identical, Arbour established diagnostic differences between the shoulder blades of BXGMV0012-1 and LPM 101, so two ankylosaurid taxa seem to be present in the formation. Based upon her conclusion that ''C. bohlini'' was a ''nomen dubium'', Arbour suggested a new generic name for the second species: ''[[Crichtonpelta]]'',<ref name="Arbour2014"/> for the time being an invalid ''nomen ex dissertatione''. However, in 2015, the name was validly published and it was officially separated from the dubious type species ''C. bohlini'' and placed in its own valid genus, ''[[Crichtonpelta]]''.<ref name="systematics ankylosaurid">{{cite journal|doi=10.1080/14772019.2015.1059985|title=Systematics, phylogeny and palaeobiogeography of the ankylosaurid dinosaurs|journal=Journal of Systematic Palaeontology|volume=14|issue=5|pages=1|year=2015|last1=Arbour|first1=Victoria M.|last2=Currie|first2=Philip J.}}</ref>