Skeletal anatomy, phylogenetic relationships, and paleoecology of the Eocene urolophid stingray Arechia crassicaudata (Blainville, 1818) from Monte Postale (Bolca Lagerstätte, Italy)

Autor(en)

Giuseppe Marramà, Giorgio Carnevale, Gavin Naylor, Jürgen Kriwet

Abstrakt

In this paper we re-examine the taxonomy and systematic position of the Eocene
Lagerstätte which are traditionally assigned to Urolophus crassicaudatus
morphology supports an assignment to the Eocene stingray genus Arechia
from the Ypresian-Lutetian of northern and western Africa. The teeth of the Bolca
A. arambourgi in some characters (i.e., labial face with concave profile just below
face slightly more developed than the labial, with convex profile in its upper part
region) that justify the recognition of a second species within the genus, i.e., A.
unique combination of features (e.g., pectoral disc large and rhomboid; tail short,
centra; distal segment of propterygia located between mouth and antorbital
radials; 100–117 pectoral radials; 15–17 pelvic-fin radials; elongated caudal fin
relationship with the living urolophids Urolophus and Trygonoptera. Arechia was a
coastal and warm habitats that characterize the Monte Postale paleoenvironment.

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Università degli Studi di Torino, Florida Museum of Natural History

Journal

Journal of Vertebrate Paleontology

Band

40

Seiten

1-12

Anzahl der Seiten

12

ISSN

0272-4634

DOI

https://doi.org/10.1080/02724634.2020.1803339

Publikationsdatum

12-2020

Peer-reviewed

Ja

ÖFOS 2012

106012 Evolutionsforschung, 105118 Paläontologie

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/35344be8-2e28-4dd5-ad1b-062740a181d6