Squalus gabrielsoni

Siverson, 1993


Classification: Elasmobranchii Squaliformes Squalidae

Reference of the original description
Siversson, M. (1993)
Maastrichtian Squaloid Sharks from Southern Sweden. Palaeontology, 36(1), 1–19

Types
Squalus gabrielsoni
Holotype: LO: 5068; Paratype: LO: 5069;


Description:


Citation: Squalus gabrielsoni Siverson, 1993: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2024

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Description
Original diagnose after Siverson (1993) p. 8 [2213]: Axial foramina separated or fused. Apron very elongated and narrow, particularly in juveniles. Mesial expansion of basal edge of root well developed reaching apex of apron. Lingual side of mesial expansion of basal edge of root generally meeting root protuberance almost at right angle. Basal edge of root nearly straight.

Remarks
shark-references Species-ID=6757;
valid after Pollerspöck et al. (2021) p. 4 [30268];


References
Guinot, G. & Condamine, F.L. (2023)
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
Pollerspöck, J. & Beaury, B. & Straube, N. & Feichtinger, I. (2021)
Oldest evidence of the genus Squalus in the north alpine realm with remarks on its evolution and distribution through time. Paleoichthys, 2, 1–9
Adolfssen, J. & Milàn, J. & Friedman, M. (2017)
Review of the Danian vertebrate fauna of southern Scandinavia. Bulletin of the Geological Society of Denmark, 65, 1–23
DOI: 10.37570/bgsd-2017-65-01
Adolfssen, J. & Ward, D.J. (2015)
Neoselachians from the Danian (Early Paleocene) of Denmark. Acta Palaeontologica Polonica, 60(2), 313–338
DOI: 10.4202/app.2012.0123
Adolfssen, J. & Ward, D.J. (2014)
Crossing the boundary: an elasmobranch fauna from Stevns Klint, Denmark. Palaeontology, 57(3), 591–629
DOI: 10.1111/pala.12079
Adolfssen, J. (2012)
Palaeoenvironment and Shark Evolution across the K/T-boundary on Southern Zealand. Phd Thesis, Faculty of Science, University of Copenhagen
Kriwet, J. & Klug, S. (2009)
Fossil record and origin of squaliform sharks (Chondrichthyes, Neoselachii). In Gallucci, V.F. & McFarlane, G.A. & Bargmann, G.G. (Eds). Biology and management of dogfish sharks. American Fisheries Society. Bethesda, Maryland: 19–38
Siversson, M. (1993)
Late Cretaceous and Danian neoselachians from southern Sweden. Lund Publications in Geology, 110, 1–28
Siversson, M. (1993)
Maastrichtian Squaloid Sharks from Southern Sweden. Palaeontology, 36(1), 1–19