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Leptonectes
Taxonomy
Leptonectes was named by McGowan (1996).
It was assigned to Eurhinosauria by Motani (1999); to Neoichthyosauria by Sander (2000) and Fischer et al. (2013); and to Leptonectidae by Maisch and Matzke (2000), McGowan and Motani (2003), Maisch and Reisdorf (2006), Maisch (2010) and Ji et al. (2016).
It was assigned to Eurhinosauria by Motani (1999); to Neoichthyosauria by Sander (2000) and Fischer et al. (2013); and to Leptonectidae by Maisch and Matzke (2000), McGowan and Motani (2003), Maisch and Reisdorf (2006), Maisch (2010) and Ji et al. (2016).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1922 | Leptopterygius margaritatus von Huene p. 21 |
| 1929 | Leptopterygius Huene |
| 1951 | Leptopterygius von Huene p. 90 |
| 1979 | Leptopterygius Appleby p. 943 |
| 1988 | Leptopterygius Carroll |
| 1996 | Leptonectes McGowan |
| 1999 | Leptonectes Motani p. 482 |
| 2000 | Leptonectes Maisch and Matzke pp. 72, 98 |
| 2000 | Leptonectes Sander |
| 2002 | Leptopterygius Sepkoski |
| 2003 | Leptonectes McGowan and Motani |
| 2006 | Leptonectes Maisch and Reisdorf |
| 2010 | Leptonectes Maisch |
| 2013 | Leptonectes Fischer et al. |
| 2016 | Leptonectes 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. †Leptonectes McGowan 1996
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†Leptonectes moorei McGowan and Milner 1999
†Leptonectes solei McGowan 1993
†Leptonectes tenuirostris Conybeare 1822
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Invalid names: Ichthyosaurus strongylostinus Hawkins 1840 [synonym]
Invalid names: Leptopterygius Huene 1929 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. M. Appleby 1979 (Leptopterygius) | "As for the single species in this genus." | |
| R. Motani 1999 | Overbite present but not remarkable; manual digits short, usually with six or less phalanges in the longest digit; notch in radius but not in other leading-edge elements. | |
| M. W. Maisch and A. T. Matzke 2000 | "Skull with long and exceedingly slender snout but no distinct overbite, orbits large but directed largely laterally and only slightly anteriorly, forefins without notches except in radius, with few usually rounded and rather widely spaced phalanges, hindfins less than two thirds of the length of the forefins." | |
| C. Ji et al. 2016 | Orbit large; angular lateral exposure at its maxi- mum depth much deeper than surangular; coronoid region slightly elevated; root of tooth without strong striations; humerus with constricted shaft, widely expanded distally with leading edge facet that is usually prominent; radioulnar foramen present; phalanges rounded and well spaced distally; forelimb longer than but less than twice hind limb; femur medially constricted, form- ing a slender shaft region; pubis and ischium separate or partially fused. |