Crassodus reifi
Maisch & Matzke, 2016
Classification: Elasmobranchii Hybodontiformes Hybodontidae
Reference of the original description
A new hybodontid shark (Chondrichthyes, Hybodontiformes) from the Lower Jurassic Posidonienschiefer Formation of Dotternhausen, SW Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 280(3), 241–257
A new hybodontid shark (Chondrichthyes, Hybodontiformes) from the Lower Jurassic Posidonienschiefer Formation of Dotternhausen, SW Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 280(3), 241–257
Description:
Citation: Crassodus reifi Maisch & Matzke, 2016: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Maisch & Matzke, 2016 [24206]: Large growing hybodontid, estimated total length probably more than 3 m; length of the Meckelian cartilage about 400 mm, Meckelian cartilage very high and robust, particularly in the anterior half; palatoquadrate slender, with prominent vertical ridges across the lateral and medial surfaces of the posterior glenoidal portion; orbital process very prominent and rectangular; teeth low-crowned and moderately elongate, with a strongly developed occlusal crest; dominant (sometimes bifurcated, ?pathological), low, rounded median cusps bulbously expanded towards the base and several (3-5 pairs) lateral cusplets, some (particularly the first lateral pair) also bulbously expanded basally; strong labial and lingual ornament of vertical ridges, often bifurcating or branching several times, reaching the crown-root-junction as very fine crenulations; crown strongly overhanging root lingually; labial nodes present, sometimes in two rows; roots with numerous medium sized vascular foramina; posterior teeth more compressed and distinctly smaller than the anterior ones.
Original diagnosis after Maisch & Matzke, 2016 [24206]: Large growing hybodontid, estimated total length probably more than 3 m; length of the Meckelian cartilage about 400 mm, Meckelian cartilage very high and robust, particularly in the anterior half; palatoquadrate slender, with prominent vertical ridges across the lateral and medial surfaces of the posterior glenoidal portion; orbital process very prominent and rectangular; teeth low-crowned and moderately elongate, with a strongly developed occlusal crest; dominant (sometimes bifurcated, ?pathological), low, rounded median cusps bulbously expanded towards the base and several (3-5 pairs) lateral cusplets, some (particularly the first lateral pair) also bulbously expanded basally; strong labial and lingual ornament of vertical ridges, often bifurcating or branching several times, reaching the crown-root-junction as very fine crenulations; crown strongly overhanging root lingually; labial nodes present, sometimes in two rows; roots with numerous medium sized vascular foramina; posterior teeth more compressed and distinctly smaller than the anterior ones.
Remarks
shark-references Species-ID=14589;
type species of Crassodus Maisch & Matzke, 2016 [24206] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=14589;
type species of Crassodus Maisch & Matzke, 2016 [24206] by monotypy (Art. 68.3 ICZN);
References
A new hybodontid shark (Chondrichthyes, Hybodontiformes) from the Lower Jurassic Posidonienschiefer Formation of Dotternhausen, SW Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 280(3), 241–257
DOI: 10.1127/njgpa/2016/0577
A new hybodontid shark (Chondrichthyes, Hybodontiformes) from the Lower Jurassic Posidonienschiefer Formation of Dotternhausen, SW Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 280(3), 241–257
DOI: 10.1127/njgpa/2016/0577
