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Eurhinosaurus
Taxonomy
Eurhinosaurus was named by Abel (1909) [Sepkoski's age data: J Toar-l]. It is not extant.
It was assigned to Cymbospondylidae by von Huene (1951); to Leptopterygiidae by Carroll (1988); to Eurhinosauria by Motani (1999); to Ichthyosauria by Sepkoski (2002); to Neoichthyosauria by Sander (2000), Fischer et al. (2013); and to Leptonectidae by Maisch and Matzke (2000), McGowan and Motani (2003), Maisch (2010), Reisdorf et al. (2011), Ji et al. (2016).
It was assigned to Cymbospondylidae by von Huene (1951); to Leptopterygiidae by Carroll (1988); to Eurhinosauria by Motani (1999); to Ichthyosauria by Sepkoski (2002); to Neoichthyosauria by Sander (2000), Fischer et al. (2013); and to Leptonectidae by Maisch and Matzke (2000), McGowan and Motani (2003), Maisch (2010), Reisdorf et al. (2011), Ji et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Eurhinosaurus Abel |
| 1951 | Eurhinosaurus von Huene p. 90 |
| 1988 | Eurhinosaurus Carroll |
| 1999 | Eurhinosaurus Motani p. 482 |
| 2000 | Eurhinosaurus Maisch and Matzke p. 98 |
| 2000 | Eurhinosaurus Sander |
| 2002 | Eurhinosaurus Sepkoski |
| 2003 | Eurhinosaurus McGowan and Motani |
| 2010 | Eurhinosaurus Maisch |
| 2011 | Eurhinosaurus Reisdorf et al. |
| 2013 | Eurhinosaurus Fischer et al. |
| 2016 | Eurhinosaurus Ji et al. p. 12 |
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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. †Eurhinosaurus Abel 1909
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†Eurhinosaurus longirostris Mantell 1851
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Invalid names: Eurhinosaurus huenei Swinton 1930 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. Motani 1999 | Overbite extreme; manual digit V with proximal ossifications; radius without well-defined anterior notch; pisiform present | |
| M. W. Maisch and A. T. Matzke 2000 | "Large ichthyosaur, reaching > 6m adult size, upper jaw extremely
elongate and slender, lower jaw slender and weak, but much shorter, distinct overbite, orbits directed anterolaterally, temporal fenestrae extremely small, supratemporal very large and wide in dorsal view, reaches orbital margin, frontals covered by nasals in dorsal view, prefrontal very small, postfrontal large, postorbital skull region very narrow, postorbital lacks lamina posterior, quadratojugal with long posteromedial processus quadratus and pierced by foramen of unknown significance, palate with small interpterygoid vacuities, pterygoid short and wide, parasphenoid ends anterolateral to unpaired carotid foramen, lower jaw with long processus retroarticularis, fore- and hindfins long and slender, with three primary digits each, notches in leading edge present in variable number, hindfins more than two thirds the length of forefins, dorsal ribs not clearly double-headed, tailbend slight, no lunate tailfin, caudal vertebrae with cartilaginous chevrons." | |
| C. Ji et al. 2016 | Size about 7 m in adult; snout and mandible slen- der; mandible much shorter than skull, <60% of skull length; maxilla and external naris contact present; basioccipital with extensive extracondylar area; basioccipital peg present; pubis and ischium not fused; forefin with four digits and one postaxial accessory digit; pisiform present; forefin and hind fin equally long and slender; number of elements in longest digit of forefin >17; wide space between tibia and fibula. |