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Ichthyosaurus acutirostris

Reptilia - Ichthyosauridae

Taxonomy
Ichthyosaurus acutirostris was named by Owen (1840). It is a 3D body fossil. Its type locality is Whitby, marine reptiles, which is in a Falciferum/Bifrons offshore shale in the Alum Shale Formation of the United Kingdom.

It was recombined as Stenopterygius acutirostris by Owen (1881) and McGowan (1974); it was recombined as Leptopterygius acutirostris by von Huene (1922); it was recombined as Temnodontosaurus acutirostris by Maisch (1997), Maisch and Matzke (2000), McGowan and Motani (2003) and Ji et al. (2016).

Synonyms
Synonymy list
YearName and author
1840Ichthyosaurus acutirostris Owen p. 121
1851Ichthyosaurus longipennis Mantell p. 378
1851Ichthyosaurus microdon Wagner p. 509
1876Ichthyosaurus crassimanus Blake p. 253
1876Ichthyosaurus crassimanus Tate and Blake p. 253 figs. pl. 1, fig. 9
1880Ichthyosaurus zetlandicus Seeley p. 635
1881Stenopterygius acutirostris Owen
1881Ichthyosaurus longifrons Owen p. 118
1889Ichthyosaurus acutirostris Lydekker p. 73 fig. 27
1889Ichthyosaurus zetlandicus Lydekker p. 76 figs. 28-30
1922Leptopterygius acutirostris von Huene p. 25
1922Stenopterygius zetlandicus von Huene p. 45
1934Ichthyosaurus zetlandicus Swinton p. 64
1974Stenopterygius acutirostris McGowan
1997Temnodontosaurus acutirostris Maisch fig. 11
2000Temnodontosaurus acutirostris Maisch and Matzke p. 72
2003Temnodontosaurus acutirostris McGowan and Motani
2010Ichthyosaurus acutirostris Maisch
2016Temnodontosaurus acutirostris Ji et al. p. 11

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
RankNameAuthor
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Ichthyosauromorpha
—Ichthyosauriformes
—Ichthyopterygia(Owen 1840)
—Eoichthyosauria
—Ichthyosauria(de Blainville 1835)
—Thunnosauria
familyIchthyosauridaeBonaparte 1841
genusIchthyosaurusKoenig 1818
speciesacutirostris

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.

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Invalid names: Ichthyosaurus crassimanus Tate and Blake 1876 [synonym], Ichthyosaurus longifrons Owen 1881 [synonym], Ichthyosaurus longipennis Mantell 1851 [synonym], Ichthyosaurus microdon Wagner 1851 [synonym], Ichthyosaurus zetlandicus Seeley 1880 [synonym]
Diagnosis
ReferenceDiagnosis
M. W. Maisch and A. T. Matzke 2000"Maxilla low , with straight suture to premaxilla, orbit relatively large, jugal contacts premaxilla, snout rather gracile and slender, ending in a pointed tip."
Measurements
No measurements are available
Composition: hydroxyapatiteo
Environment: marineo
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Reproduction: viviparouso
Created: 2009-07-20 06:07:40
Modified: 2010-02-23 00:20:57
Source: o = order
Reference: Kiessling 2004

Age range: Early/Lower Toarcian or 183.00000 to 182.00000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0France Ichthyosaurus longifrons (122732)
Early/Lower Toarcian183.0 - 182.0United Kingdom (England) Leptopterygius acutirostris (90448 90458 90461)
Falciferum - Bifrons183.0 - 175.6United Kingdom (England) Ichthyosaurus acutirostris, Leptopterygius acutirostris (type locality: 90459)