Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Seeleyosaurus guilelmiimperatoris
Taxonomy
Plesiosaurus guilelmiimperatoris was named by Dames (1895). Its type specimen is MB.R.1992, a skeleton, and it is a 3D body fossil. Its type locality is Hauff slate quarry, Holzmaden, epsilon II/4, SMNS, which is in a Falciferum marine shale in the Posidonia Shale Formation of Germany.
It was recombined as Seeleyosaurus guilelmiimperatoris by Grossmann (2007) and Benson et al. (2012).
It was recombined as Seeleyosaurus guilelmiimperatoris by Grossmann (2007) and Benson et al. (2012).
Synonyms
|
Synonymy list
Year | Name and author |
---|---|
1895 | Plesiosaurus guilelmiimperatoris Dames p. 16 figs. Plates 1-3 |
1910 | Plesiosaurus guilelmiimperatoris Fraas p. 106 figs. Figs 1-5; Plates 6, 7; Plate 10, fig. 6 |
1940 | Seeleyosaurus holzmadensis White p. 461 |
1963 | Plesiosaurus guilelmiimperatoris Persson p. 20 |
1997 | Plesiosaurus guilelmiimperatoris Storrs p. 179 |
2001 | Plesiosaurus guilelmiimperatoris O'Keefe p. 11 |
2007 | Seeleyosaurus guilelmiimperatoris Grossmann pp. 545-546 figs. 2-6 |
2012 | Seeleyosaurus guilelmiimperatoris Benson et al. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Seeleyosaurus guilelmiimperatoris Dames 1895
show all | hide all
Invalid names: Seeleyosaurus holzmadensis White 1940 [synonym]
Diagnosis
Reference | Diagnosis | |
---|---|---|
F. Grossmann 2007 | Moderate-sized plesiosauroid, adults up to 3Æ5 m in length with a skull length of c. 170 mm, temporal openings approximately the same size as the orbits; five premaxillary teeth, a maximum of 20 maxillary teeth, smaller teeth directly around the premaxillary-maxillary suture and 4–5 enlarged teeth in both premaxilla and maxilla near the premaxillary-maxillary suture; teeth with fine striae on the lingual side and distinctly less pronounced or absent striae on the buccal side; maxilla with a long posteroventral process reaching approximately to the middle of the jugal; small parietal foramen situated at the frontal-parietal suture; parasphenoid of oblong form without cultriform process and anterior interpterygoid vacuity with rounded posterior margin; straight pterygoid-ectopterygoid suture; four proximal carpals and tarsals; maximum number of phalanges more than ten in the third digit; limbs long, c. 25 per cent of the overall body length in adults. |