Columbusia cf. deblieuxi
Kirkland, Eaton & Brinkman, 2013
Classification: Elasmobranchii Rajiformes Sclerorhynchidae
Reference of the original description
Elasmobranchs from upper Cretaceous freshwater facies in southern Utah. In At the top of the Grand Staircase – The Late Cretaceous of southern Utah. LOEWEN, Alan L. TITUS & Mark A. (Eds.), Indian Univ. Press.: 153–194, fig. 9.1–9.22
Elasmobranchs from upper Cretaceous freshwater facies in southern Utah. In At the top of the Grand Staircase – The Late Cretaceous of southern Utah. LOEWEN, Alan L. TITUS & Mark A. (Eds.), Indian Univ. Press.: 153–194, fig. 9.1–9.22
Types
Columbusia cf. deblieuxi
Columbusia cf. deblieuxi
Description:
Citation: Columbusia cf. deblieuxi Kirkland, Eaton & Brinkman, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
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Description
Original diagnosis after Kirkland, Eaton & Brinkman, 2013 [20268]: Columbusia deblieuxi (Fig. 9.19) differs from the type species C. fragilis in bearing a single distinct bladelike lateral cusp on either side of the main cusp that tends to overlap the root laterally, and in the distinct crest formed on the lingual side of the central cusp. C. roessingi differs in commonly possessing multiple lateral cusps on the lateral carinae.
Original diagnosis after Kirkland, Eaton & Brinkman, 2013 [20268]: Columbusia deblieuxi (Fig. 9.19) differs from the type species C. fragilis in bearing a single distinct bladelike lateral cusp on either side of the main cusp that tends to overlap the root laterally, and in the distinct crest formed on the lingual side of the central cusp. C. roessingi differs in commonly possessing multiple lateral cusps on the lateral carinae.
References
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
DOI: 10.1016/j.cretres.2025.106151
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
DOI: 10.1016/j.cretres.2025.106151
