Amaradontus santuccii
Hodnett & Elliott, 2018
Classification: Elasmobranchii incert. sedis Anachronistidae
Reference of the original description
Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology, 92(Supplement S77), 1–33
Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology, 92(Supplement S77), 1–33
Description:
Citation: Amaradontus santuccii Hodnett & Elliott, 2018: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Hodnett & Elliott, 2018 [26883]: Small anachronistid shark with heterodont teeth ranging from ∼600 μm–1 mm mesiodistally to ∼400–500 μm labiolingually, and an approximate height of 300–400 μm. Crown asymmetric. Median cusp broad mesiodistally, inclined distally, and with rounded apex. Lateral cusps low or absent. Cusps connected by sharp carinae. One to two vertical ridges can be present on median cusp. A faint labial cingulum present. Tooth base comprises an elliptical mesiodistally broad basolabial projection and lingually shallow mesiodistally wide basal ridge. Basolabial projection positioned under median cusp. Central pit shallow and wide mesiodistally. A single large circular foramen present on lingual margin of base exits labially.
Original diagnosis after Hodnett & Elliott, 2018 [26883]: Small anachronistid shark with heterodont teeth ranging from ∼600 μm–1 mm mesiodistally to ∼400–500 μm labiolingually, and an approximate height of 300–400 μm. Crown asymmetric. Median cusp broad mesiodistally, inclined distally, and with rounded apex. Lateral cusps low or absent. Cusps connected by sharp carinae. One to two vertical ridges can be present on median cusp. A faint labial cingulum present. Tooth base comprises an elliptical mesiodistally broad basolabial projection and lingually shallow mesiodistally wide basal ridge. Basolabial projection positioned under median cusp. Central pit shallow and wide mesiodistally. A single large circular foramen present on lingual margin of base exits labially.
Remarks
shark-references Species-ID=15291;
type species of Amaradontus Hodnett & Elliott, 2018 [26883] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=15291;
type species of Amaradontus Hodnett & Elliott, 2018 [26883] by monotypy (Art. 68.3 ICZN);
References
Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology, 92(Supplement S77), 1–33
DOI: 10.1017/jpa.2018.72
Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology, 92(Supplement S77), 1–33
DOI: 10.1017/jpa.2018.72
