Squalus serriculus
Jordan & Hannibal, 1923
Classification: Elasmobranchii Squaliformes Squalidae
Reference of the original description
Fossil sharks and rays of the Pacific slope of North America. Bulletin of the Southern California Academy of Sciences, 22, 27–63, pl. 1–10
Fossil sharks and rays of the Pacific slope of North America. Bulletin of the Southern California Academy of Sciences, 22, 27–63, pl. 1–10
Image of the original description
Squalus serriculus Jordan & Hannibal, 1923, Pl. III, fig. Q, R
Squalus serriculus Jordan & Hannibal, 1923, Pl. III, fig. Q, R
Types
Squalus serriculus
Holotype: SU.: 937 (Accession Number: 58378.00); Paratype: SU.: 939 (Accession Number: 58378.00);
Squalus serriculus
Holotype: SU.: 937 (Accession Number: 58378.00); Paratype: SU.: 939 (Accession Number: 58378.00);
Images of types
Description:
Citation: Squalus serriculus Jordan & Hannibal, 1923: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2025
Description
Original diagnose after Jordan & Hannibal (1923) p. 58 [1250]: Squalus serriculus Jordan and Hannibal, new species.
(Plate III. q. r.)
Teeth small, compressed, shaped like a cocks-comb with a single posterior cone; one margin forming the functional cutting edge, outer edge very finely serrulate; base of tooth thin, with a tubercle cf enamel that extends down over the front of the root, as in Squalus acanthias. Lower teeth longer than upper. We have numerous specimens of this species which is distinguished from the living Squalus suckleyi of the coast by the finely serrulate teeth which have however precisely the same form. In all other Squalidae, the teeth are entire.
Type, (lower tooth) height 6 mm., length of base, 11.5 mm., depth 2.5 mm.; cotype, (upper tooth) height 6 mm., length 8 mm., thickness 2.5 mm.
Shark-tooth Hill (Morrice) type (S. U. 937); Bena, (S. U. 939).
This is the first fossil of this family found in American deposits and the few recorded from Europe are all more or less doubtful.
Original diagnose after Jordan & Hannibal (1923) p. 58 [1250]: Squalus serriculus Jordan and Hannibal, new species.
(Plate III. q. r.)
Teeth small, compressed, shaped like a cocks-comb with a single posterior cone; one margin forming the functional cutting edge, outer edge very finely serrulate; base of tooth thin, with a tubercle cf enamel that extends down over the front of the root, as in Squalus acanthias. Lower teeth longer than upper. We have numerous specimens of this species which is distinguished from the living Squalus suckleyi of the coast by the finely serrulate teeth which have however precisely the same form. In all other Squalidae, the teeth are entire.
Type, (lower tooth) height 6 mm., length of base, 11.5 mm., depth 2.5 mm.; cotype, (upper tooth) height 6 mm., length 8 mm., thickness 2.5 mm.
Shark-tooth Hill (Morrice) type (S. U. 937); Bena, (S. U. 939).
This is the first fossil of this family found in American deposits and the few recorded from Europe are all more or less doubtful.
References
Fossil Shark Teeth of the World. Lamna Books, 170 p
Haaien- en roggentanden uit Liessel (N.-B.) Fontys Hogescholen, Tilburg
Fossil sharks and rays of the Pacific slope of North America. Bulletin of the Southern California Academy of Sciences, 22, 27–63, pl. 1–10
Fossil Shark Teeth of the World. Lamna Books, 170 p
Haaien- en roggentanden uit Liessel (N.-B.) Fontys Hogescholen, Tilburg
Fossil sharks and rays of the Pacific slope of North America. Bulletin of the Southern California Academy of Sciences, 22, 27–63, pl. 1–10
