Lessiniabatis aenigmatica

MARRAMÀ, CARNEVALE, GIUSBERTI, NAYLOR & KRIWET, 2019


Classification: Elasmobranchii Myliobatiformes incertae sedis

Reference of the original description
MARRAMÀ, G. & CARNEVALE, G. & GIUSBERTI, L. & NAYLOR, G.J.P. & KRIWET, J. (2019)
A bizarre Eocene dasyatoid batomorph (Elasmobranchii, Myliobatiformes) from the Bolca Lagerstätte (Italy) reveals a new, extinct body plan for stingrays. Scientific Reports, 9: 14087

Types
Lessiniabatis aenigmatica
Holotype: MNHN: F.Bol.566 (ex 11001 and 10997); Paratype: MFSN: GP.864; MSNFI: IGF 103555;

Images of types

Description:


Citation: Lessiniabatis aenigmatica MARRAMÀ, CARNEVALE, GIUSBERTI, NAYLOR & KRIWET, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2021

Please send your images of "Lessiniabatis aenigmatica" to info@shark-references.com

Lessiniabatis aenigmatica MARRAMÀ, CARNEVALE, GIUSBERTI, NAYLOR & KRIWET, 2019, Eocene Bolca Konservat-Lagerstätte, F.Bol.566, holotype © Giuseppe Marramà, Università degli Studi di Torino, Italy

Description
Original diagnose after Marramà et al. (2019) p. 2 [27617]: A dasyatoid stingray unique in having a thoracolumbar synarcual extending backward beyond the pelvic girdle, a tail that is extremely short and not protruding from the posterior edge of the pectoral disc, and pectoral radials that are proximally fused with one another. Moreover, †Lessiniabatis gen. nov. is characterized by the following combination of traits: low number of vertebrae posterior to the pelvic girdle (65–68); dorsal and caudal fins absent; pelvic girdle extremely small and strongly arched; tail stings and cartilaginous tail rod absent; teeth with dasyatoid morphology; enameloid surface smooth; lingual tooth surface broad and slightly convex; labial tooth surface slightly concave; labial and lingual tooth faces not steep in lateral profile; tooth root bilobed, with a central foramen; holaulacorhizid root type with an elongated pulp cavity; sparse, star-shaped dermal denticles covering the whole body; about 130–135 pectoral-fin radials (of which 59–61 are propterygial, 16–18 are mesopterygial, and 54–57 are metapterygial); about 120 vertebral centra.

Remarks
type species of Lessiniabatis Marramà et al. 2019 p. 2 [27617] by original designation (Art. 68.2 ICZN);

valid after Marramà et al. (2019) p. 2 [27617];


References
MARRAMÀ, G. & CARNEVALE, G. & GIUSBERTI, L. & NAYLOR, G.J.P. & KRIWET, J. (2019)
A bizarre Eocene dasyatoid batomorph (Elasmobranchii, Myliobatiformes) from the Bolca Lagerstätte (Italy) reveals a new, extinct body plan for stingrays. Scientific Reports, 9: 14087
DOI: 10.1038/s41598-019-50544-y