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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), Argyriou et al. (2022).
It was assigned to Hexanchidae by Underwood et al. (2011), Guinot et al. (2013), Guinot et al. (2014), 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." |
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Wagner 2023, Hendy et al. 2009 | |||||
Age range: base of the Early/Lower Valanginian to the top of the Danian or 137.05000 to 61.66000 Ma
Collections (54 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Valanginian | France (Gard) | G. dentatus (213631) | |
| Late/Upper Hauterivian | United Kingdom (England) | Notorhynchus aptiensis (66418) | |
| Late/Upper Hauterivian | Germany | Notorhynchus aptiensis (210473) | |
| Early/Lower Barremian | Germany | Notorhynchus aptiensis (241486) | |
| Early/Lower Aptian | United Kingdom (England) | Notorhynchus aptiensis (213576 213577) | |
| Late/Upper Aptian | France | Notorhynchus aptiensis (214869) | |
| Early/Lower Albian | United Kingdom (England) | Notorhynchus aptiensis (213321 213323 213324) | |
| Albian | Australia (Western Australia) | Notorynchus aptiensis (90688) | |
| Middle Albian | United Kingdom (England) | Notorhynchus aptiensis (213325 213326 213367) | |
| Late/Upper Albian | United Kingdom (England) | Notorhynchus aptiensis (213327 213328 213329 213330 213331 213332 213333 213334 213335 213336 213337 213338 213339 213340 213341 213346 213348 213349 213350 213351 213368 213369 213370 213371 213372 213373 213374) | |
| Early/Lower Cenomanian | United Kingdom (England) | G. aptiensis (213567) Notorhynchus aptiensis (213355 213356 213359 213361 213362 213363) | |
| Early/Lower Cenomanian | India (Tamil Nadu) | G. magnus (110178) | |
| Middle Cenomanian | United Kingdom (England) | G. aptiensis (213569 213570) Notorhynchus aptiensis (213365) | |
| Late/Upper Maastrichtian | Greece | G. sp. (207367) | |
| Danian | Denmark | G. sp. (241429) |