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Leptostyrax

Chondrichthyes - Lamniformes - Eoptolamnidae

Taxonomy
Leptostyrax was named by Williston (1900) [Sepkoski's age data: K Albi K Coni Sepkoski's reference number: 884]. It is not extant.

It was assigned to Lamninae by Hay (1902); to Lamnidae by Jordan (1963); to Cretoxyrhinidae by Siverson (1992), Siverson (1996), Siverson (1997), Underwood and Mitchell (1999), Cappetta and Case (1999); to Lamniformes by Sepkoski (2002); and to Eoptolamnidae by Kriwet et al. (2008).

Species
L. macrorhiza (syn. L. bicuspidatus, Lamna mudgei), L. stychi
Species lacking formal opinion data
L. crassidens

Synonyms
Synonymy list
YearName and author
1900Leptostyrax Williston
1902Leptostyrax Hay p. 304
1963Leptostyrax Jordan p. 599
1978Megarhizodon Sokolov
1992Leptostyrax Siverson p. 535
1996Leptostyrax Siverson p. 824
1997Leptostyrax Siverson p. 460
1999Leptostyrax Cappetta and Case p. 24
1999Leptostyrax Underwood and Mitchell
2002Leptostyrax Sepkoski
2008Leptostyrax Kriwet et al. p. 280

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
infraclassElasmobranchii(Bonaparte 1838)
—Euselachii()
—NeoselachiiCompagno 1977
superorderGaleomorphiiCompagno 1973
orderLamniformesBerg 1958
familyEoptolamnidae
genusLeptostyraxWilliston 1900

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. †Leptostyrax Williston 1900
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Invalid names: Lamna mudgei Cope 1875 [synonym], Leptostyrax bicuspidatus Williston 1900 [synonym]
†Leptostyrax stychi Schmitz et al. 2010
Invalid names: Megarhizodon Sokolov 1978 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Created: 2009-07-21 07:05:21
Modified: 2009-07-21 09:05:21
Source: o = order, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Wagner 2023

Age range: base of the Early/Lower Barremian to the top of the Early/Lower Campanian or 125.77000 to 72.20000 Ma

Collections (48 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Barremian125.77 - 121.4Germany L. stychi (241486)
Early/Lower Aptian121.4 - 119.57India L. sp. (239333)
Aptian121.4 - 113.2Japan (Iwate) Plicatolamna macrorhiza (210764 210765)
Late/Upper Aptian119.57 - 113.2United Kingdom (England) L. stychi (241464)
Late/Upper Aptian - Early/Lower Albian119.57 - 110.1United Kingdom (England) L. stychi (241463)
Late/Upper Aptian - Early/Lower Albian119.57 - 110.1USA (Texas) L. bicuspidatus (14375)
Early/Lower Albian113.2 - 110.1France (Marne) L. macrorhiza (235560)
Early/Lower Albian113.2 - 110.1USA (Texas) L. sp. (27774)
Albian113.2 - 100.5USA (Texas) L. bicuspidatus (27604 27606 27613)
Albian113.2 - 100.5Australia (Western Australia) L. sp. (90688)
Middle Albian110.1 - 106.3France (Haute-Marne) L. macrorhiza (235569)
Middle Albian110.1 - 106.3France (Marne) L. macrorhiza (169108 235563 235564 235565 235567)
Late/Upper Albian106.3 - 100.5USA (Texas) L. macrorhiza (52126 213302 213307)
Late/Upper Albian106.3 - 100.5Angola L. macrorhiza (275403)
Late/Upper Albian106.3 - 100.5Lithuania Odontaspis macrorhiza (213709 213710 213717)
Late/Upper Albian106.3 - 100.5United Kingdom (England) L. sp. (213347 213354)
Cenomanian100.5 - 93.9Australia (Western Australia) L. sp. (215794)
Early/Lower Cenomanian100.5 - 93.9Russian Federation (Moscow) L. sp. (138814)
Late/Upper Cenomanian100.5 - 93.9Lithuania Odontaspis macrorhiza (90732 213719 213720 213721)
Late/Upper Cenomanian100.5 - 93.9USA (Arizona) L. sp. (55990)
Middle Cenomanian100.5 - 93.9Russian Federation (Volgograd) Megarhizodon macrorhiza (92399)
Middle Cenomanian100.5 - 93.9USA (New Mexico) L. sp. (276884)
Cenomanian - Coniacian100.5 - 85.7Germany Megarhizodon macrorhiza (235323)
Late/Upper Cretaceous100.5 - 66.0Japan (Hokkaido) Plicatolamna macrorhiza (161435)
Middle Turonian93.9 - 89.8USA (New Mexico) L. sp. (179267)
Middle Turonian93.9 - 89.8USA (Utah) L. sp. (145187)
Middle Turonian93.9 - 89.8France Plicatolamna macrorhiza (241894)
Turonian93.9 - 89.8USA (Kansas) L. crassidens (102879)
Coniacian - Santonian89.8 - 83.6Belgium (Namur) Plicatolamna macrorhiza (51518)
Early/Lower Campanian83.6 - 72.2Germany Odontaspis macrorhiza (241700)
Early/Lower Campanian83.6 - 72.2Lithuania Odontaspis macrorhiza (90731 213722)
Early/Lower Campanian83.6 - 72.2Sweden (Skåne) L. sp. (74335)