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Gladioserratus
Taxonomy
Gladioserratus was named by Underwood et al. (2011).
It was assigned to Hexanchidae by Underwood et al. (2011), Guinot et al. (2013), Guinot et al. (2014) and Argyriou et al. (2022).
It was assigned to Hexanchidae by Underwood et al. (2011), Guinot et al. (2013), Guinot et al. (2014) and Argyriou et al. (2022).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Gladioserratus Underwood et al. |
| 2013 | Gladioserratus Guinot et al. p. 597 |
| 2014 | Gladioserratus Guinot et al. p. 59 |
| 2022 | Gladioserratus Argyriou et al. p. 19 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Gladioserratus Underwood et al. 2011
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†Gladioserratus aptiensis Pictet 1865
†Gladioserratus dentatus Guinot et al. 2014
†Gladioserratus magnus Underwood et al. 2011
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. J. Underwood et al. 2011 | "Genus known only from isolated teeth. Moderate to strong dignathic heterodonty present and upper parasymphyseal teeth clearly differentiated. Roots of all teeth do not significantly exceed heights of crowns on labial sides. Roots of all teeth with flat labial faces and gently convex lingual faces, with a weak mesiodistal ridge just below base of crown. Root thickest and highest below base of first cusp, tapering distally, with rate of taper varying with tooth position. Upper teeth with one (in parasymphyseal teeth) to four cusps, each inclined and regularly decreasing in size distally, with first cusp more erect than successive cusps. Lower teeth with up to six cusps; first cusp in some specimens may be more erect in some specimens than in others (perhaps representing sexual dimorphism), but successive cusps decrease regularly in size distally. Cusps are biconvex, more strongly on lingual side, and with continuous cutting edge. Regular serrations of a consistent size on lower half of mesial edge of first cusp in lateral teeth of adults; serrations may be irregular or absent in upper parasymphyseal teeth and teeth of juveniles." |