Bicuspidon
Temporal range: Cenomanian-Maastrichtian 99–66 Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Clade: †Polyglyphanodontia
Genus: †Bicuspidon
Nydam and Cifelli, 2002
Type species
Bicuspidon numerosus
Nydam and Cifelli, 2002
Species
List of species
  • B. numerosus
    Nydam and Cifelli, 2002
  • B. hatzegiensis
    Folie and Codrea, 2005
  • B. smikros
    Nydam, 2013
  • B. hogreli
    Vullo and Rage, 2018

Bicuspidon is an extinct genus of polyglyphanodont lizard known from the Late Cretaceous of North America, Europe and Africa, two species, B. numerosus[1] and B. smikros[2] are known from the Cenomanian of Utah in the Mussentuchit Member of the Cedar Mountain Formation and the Naturita Formation respectively. While B. hatzegiensis is known from the Maastrichtian Sânpetru Formation of Romania[3] and B. hogreli is known from the Cenomanian Kem Kem Beds of Morocco.[4] An indeterminate taxon closely related to B. hatzegiensis referred to as B. aff. hatzegiensis is known from the Santonian Csehbánya Formation of Hungary.[5] The dentition is heterodont, with conical anterior teeth and transversely oriented bicuspid posterior teeth.

References

  1. ^ Nydam, Randall; Cifelli, Richard (2002). "A new teiid lizard from the Cedar Mountain Formation (Albian–Cenomanian boundary) of Utah". Journal of Vertebrate Paleontology. 22 (2): 276–285. doi:10.1671/0272-4634(2002)022[0276:ANTLFT]2.0.CO;2.
  2. ^ L., Titus, Alan (2013). At the Top of the Grand Staircase : the Late Cretaceous of Southern Utah. Loewen, Mark A. Bloomington, IN: Indiana University Press. ISBN 9780253008961. OCLC 857365429.((cite book)): CS1 maint: multiple names: authors list (link)
  3. ^ Folie, Annelise; Codrea, Vlad (January 2005). "New lissamphibians and squamates from the Maastrichtian of Haţeg Basin, Romania". Acta Palaeontologica Polonica. 50 (1): 57–71.
  4. ^ Romain Vullo; Jean-Claude Rage (2018). "The first Gondwanan borioteiioid lizard and the mid-Cretaceous dispersal event between North America and Africa". The Science of Nature. 105 (11–12): Article 61. doi:10.1007/s00114-018-1588-3. PMID 30291449.
  5. ^ Makádi, László (December 2006). "Bicuspidon aff. hatzegiensis (Squamata: Scincomorpha: Teiidae) from the Upper Cretaceous Csehbánya Formation (Hungary, Bakony Mts)" (PDF). Acta Geologica Hungarica. 49 (4): 373–385. doi:10.1556/ageol.49.2006.4.5. ISSN 0236-5278.
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