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Ichthyosaurus tenuirostris
Taxonomy
Ichthyosaurus tenuirostris was named by Conybeare (1822). It is a 3D body fossil.
It was recombined as Leptopterygius tenuirostris by Huene (1922), von Huene (1922), Delair (1960), Appleby (1979) and McGowan (1989); it was recombined as Leptonectes tenuirostris by Maisch and Matzke (2000), Maisch and Matzke (2003), McGowan and Motani (2003), Maisch (2010), Fischer et al. (2013) and Ji et al. (2016).
It was recombined as Leptopterygius tenuirostris by Huene (1922), von Huene (1922), Delair (1960), Appleby (1979) and McGowan (1989); it was recombined as Leptonectes tenuirostris by Maisch and Matzke (2000), Maisch and Matzke (2003), McGowan and Motani (2003), Maisch (2010), Fischer et al. (2013) and Ji et al. (2016).
Synonyms
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Synonymy list
Year | Name and author |
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1822 | Ichthyosaurus tenuirostris Conybeare pp. pl. 15, fig. 10 |
1822 | Ichthyosaurus tenuirostris Parkinson p. 300 |
1830 | Ichthyosaurus grandipes Sharpe p. 222 |
1834 | Ichthyosaurus chirostrongulostinus Hawkins p. 12 figs. Pl. XVI |
1840 | Ichthyosaurus strongylostinus Hawkins p. 13 figs. Pl. XII-XVI |
1840 | Ichthyosaurus tenuirostris Owen p. 117 |
1851 | Ichthyosaurus tenuirostris Mantell p. 362 |
1858 | Ichthyosaurus tenuirostris Buckland p. 168 |
1859 | Ichthyosaurus tenuirostris Owen p. 149 |
1861 | Ichthyosaurus tenuirostris Owen p. 223 |
1889 | Ichthyosaurus tenuirostris Lydekker p. 83 figs. 25, 26 |
1922 | Leptopterygius tenuirostris Huene |
1922 | Leptopterygius tenuirostris von Huene p. 1 |
1934 | Ichthyosaurus tenuirostris Swinton fig. VIII |
1960 | Leptopterygius tenuirostris Delair p. 70 |
1979 | Leptopterygius tenuirostris Appleby p. 943 |
1989 | Leptopterygius tenuirostris McGowan p. 413 |
2000 | Leptonectes tenuirostris Maisch and Matzke p. 72 |
2003 | Leptonectes tenuirostris Maisch and Matzke pp. 116-124 figs. 1-4 |
2003 | Leptonectes tenuirostris McGowan and Motani |
2010 | Leptonectes tenuirostris Maisch |
2013 | Leptonectes tenuirostris Fischer et al. |
2016 | Leptonectes tenuirostris 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.
†Ichthyosaurus tenuirostris Conybeare 1822
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Invalid names: Ichthyosaurus chirostrongulostinus Hawkins 1834 [synonym], Ichthyosaurus grandipes Sharpe 1830 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. D. Conybeare 1822 | In this the teeth are much more slender than in the preceding species. But the species is best marked by the extreme length and thinness of the snout, in which points it very strikingly exceeds all the other ichthyosauri | |
R. M. Appleby 1979 | "As set out by McGowan (1974, p. 25) with the additional facts that the number of primary fingers may be three or four and that the coracoid shows all gradations in the species from longipinnatoid to latipinnatoid." | |
M. W. Maisch and A. T. Matzke 2000 | "Small species never exceeding 4 m in length, snout very long." | |
M. W. Maisch and A. T. Matzke 2003 | Medium-sized ichthyosaur, total length around 4,000 mm at maximum; skull length not exceeding 1,000 mm; snout very long and slender, orbital ratio of skull less than 0.25; snout ratio exceeding 0.70; prenarial ratio larger than 0.56; sclerotic ratio much larger than 0.34; snout without or with only rather inconspicuous overbite; fenestra supratemporalis of rounded shape, about one third the size of orbita; jugal with narrow, dorsoventrally depressed ramus suborbitalis and considerably wider ramus postorbitalis; forefin relatively wide with four well-developed primary digits; humerus with strongly constricted shaft and well-developed leading edge facet; foramen interosseum remaining usually open between radius and ulna; radius and tibia notched; other fin elements usually unnotched; phalanges discoidal, large, rather widely spaced distally; femur with slender shaft, expanded distally. |