Reesodus underwoodi

KOOT, CUNY, TINTORI & TWITCHETT, 2013


Classification: Elasmobranchii Hybodontiformes Lonchidiidae

Reference of the original description
KOOT, M.B. & CUNY, G. & TINTORI, A. & TWITCHETT, R.J. (2013)
A new diverse shark fauna from the Wordian (Middle Permian) Khuff Formation in the interior Haushi-Huqf area, Sultanate of Oman. Palaeontology, 56 (2): 303–343

Types
Reesodus underwoodi
Holotype: MPUM: 10891;


Description:


Citation: Reesodus underwoodi KOOT, CUNY, TINTORI & TWITCHETT, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2021

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Description
Original diagnose after Koot et al. (2013) p. 316 [18013]: Triangular labial peg always present, sometimes flanked by two accessory nodes, and lingual peg less developed but always present. Acute longitudinal crest and horizontal rim present at crown shoulder, most pronounced lingually. Base slightly dejected lingually. Anaulacorhize vascularization consisting of few large foramina with labially a single row of small foramina near the crown–base junction.

Remarks
type species of Reesodus, Koot et al., 2013 p. 316 [18013] by original designation (Art. 68.2 ICZN);

valid after Koot et al. (2013) p. 316 [18013];


References
KOOT, M.B. & CUNY, G. & TINTORI, A. & TWITCHETT, R.J. (2013)
A new diverse shark fauna from the Wordian (Middle Permian) Khuff Formation in the interior Haushi-Huqf area, Sultanate of Oman. Palaeontology, 56 (2): 303–343
DOI: 10.1111/j.1475-4983.2012.01199.x
KOOT, M.B. (2013)
Effects of the late Permian mass extinction on chondrichthyan palaeobiodiversity and distribution patterns. Thesis, University of Plymouth