Plesiozanobatus egertoni

(De Zigno, 1876)


Classification: Elasmobranchii Rhinopristiformes Zanobatidae

Reference of the original description
de Zigno, A. (1876)
Annotazioni paleontologiche. Aggiunte alla ittiologia dell'epoca eocena. Memorie del Reale Istituto Veneto di Scienze, Lettere ed Arti, 20: 445–455 (extract published in 1876)

Synonyms / new combinations and misspellings
Platyrhina egertoni, Torpedo egertoni

Types
Plesiozanobatus egertoni

Torpedo egertoni
Holotype: MGP-PD: 154Z;

Images of types

Description:


Citation: Plesiozanobatus egertoni (De Zigno, 1876): In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 01/2023

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Plesiozanobatus egertoni De Zigno, 1876, Eocene Bolca Konservat-Lagerstätte, MGP-PD 154Z; holotype, Scale bar 100 mm © Giuseppe Marramà, Università degli Studi di Torino, Italy

Description
Original diagnose after Marramà et al. (2020) p. 1528 [28661]: Pectoral disc large and roughly rounded, representing 56–70% TL; tail stout and short, distinctly demarcated from the disc; two dorsal fins and caudal fin present; densely, closely set small dermal denticles forming a continuous pavement; large, rounded, scattered thorns covering the entire disc and tail; rostral cartilage absent; nasal capsules laterally expanded without horn-like processes; long propterygia extending near the anterior margin of the disc; mesopterygium absent; about 65–75 pectoral radials; puboischiadic bar narrow and moderately arched; approximately 20 pelvic-fin rays; 80–90 vertebrae; about 10 pairs of ribs.

Remarks
valid after Marramà et al. (2020) p. 1529 [28661];


References
Marramà, G. & Carnevale, G. & Kriwet, J. (2021)
Diversity, palaeoecology and palaeoenvironmental significance of the Eocene chondrichthyan assemblages of the Bolca Lagerstätte, Italy. Lethaia, 54(5), 736–751
DOI: 10.1111/let.12436
Marrama, G. & Carnevale, G. & Claeson, K.M. & Naylor, G.J.P. & Kriwet, J. (2020)
Revision of the Eocene ‘Platyrhina’ species from the Bolca Lagerstätte (Italy) reveals the first panray (Batomorphii: Zanobatidae) in the fossil record. Journal of Systematic Palaeontology, 18, 1519–1542
DOI: 10.1080/14772019.2020.1783380
Marramà, G. & Carnevale, G. & Engelbrecht, A. & Claeson, K.M. & Zorzin, R. (2018)
A synoptic review of the Eocene (Ypresian) cartilaginous fishes (Chondrichthyes: Holocephali, Elasmobranchii) of the Bolca Konservat-Lagerstätte, Italy. Paläontologische Zeitschrift, 92(2), 283–313
DOI: 10.1007/s12542-017-0387-z
Carnevale, G. & Bannikov, A.F. & Marramà, G. & Tyler, J.C. & Zorzin, R. (2014)
The Pesciara-Monte Postale Fossil-Lagerstätte: 2. Fishes and other vertebrates. Rendiconti della Società Paleontologica Italiana, 4, 37–63
Eastman, C.R. (1904)
Descriptions of Bolca fishes. Bulletin of the Museum of Comparative Zoology at Harvard College, 46(1), 1–40
Jaekel, O. (1894)
Die eocänen Selachier vom Monte Bolca. Ein Beitrag zur Morphogenie der Wirbeltiere. 176 p., 39 fig., 8 pl., Verlag Julius Springer, Berlin
de Zigno, A. (1876)
Annotazioni paleontologiche. Aggiunte alla ittiologia dell'epoca eocena. Memorie del Reale Istituto Veneto di Scienze, Lettere ed Arti, 20: 445–455 (extract published in 1876)