Reifella lata
Ivanov, 2021
Classification: Elasmobranchii incert. sedis Anachronistidae
Reference of the original description
Fish Microremains from the Cutoff Formation (Roadian, Middle Permian) of the Guadalupe Mountains, West Texas, USA. Micropaleontology, 67(4), 365–402
Fish Microremains from the Cutoff Formation (Roadian, Middle Permian) of the Guadalupe Mountains, West Texas, USA. Micropaleontology, 67(4), 365–402
Description:
Citation: Reifella lata Ivanov, 2021: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Ivanov, 2021 [29904]: Anachronistid teeth, elongated mesiodistally, with almost the same sizes of the crown and base; smooth, elongated semicircular crown; with rounded lateral blades and short, semioval labial flange; occlusal crest placed almost on the midline of the crown; low, triangular central cusp displaced labially; crown lingual surface curved to a deep lingual groove; vertical protrusions on distal and mesial crown parts; shallow, low crown/base junction; oval base extended lingually with a triangular thickening in the middle part; deep groove of a transversal canal in the lingual part; oval or rhomboid, prominent basal tubercle placed under the slightly overlapping labial flange; central and six ascending vascular canals connect the mesiodistally elongated pulp cavity.
Original diagnosis after Ivanov, 2021 [29904]: Anachronistid teeth, elongated mesiodistally, with almost the same sizes of the crown and base; smooth, elongated semicircular crown; with rounded lateral blades and short, semioval labial flange; occlusal crest placed almost on the midline of the crown; low, triangular central cusp displaced labially; crown lingual surface curved to a deep lingual groove; vertical protrusions on distal and mesial crown parts; shallow, low crown/base junction; oval base extended lingually with a triangular thickening in the middle part; deep groove of a transversal canal in the lingual part; oval or rhomboid, prominent basal tubercle placed under the slightly overlapping labial flange; central and six ascending vascular canals connect the mesiodistally elongated pulp cavity.
Remarks
shark-references Species-ID=16149;
type species of Reifella Ivanov, 2021 [29904] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=16149;
type species of Reifella Ivanov, 2021 [29904] by monotypy (Art. 68.3 ICZN);
References
Fish Microremains from the Cutoff Formation (Roadian, Middle Permian) of the Guadalupe Mountains, West Texas, USA. Micropaleontology, 67(4), 365–402
Fish Microremains from the Cutoff Formation (Roadian, Middle Permian) of the Guadalupe Mountains, West Texas, USA. Micropaleontology, 67(4), 365–402
