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Sphenodus

Chondrichthyes - Synechodontiformes - Orthacodontidae

Taxonomy
Sphenodus was named by Agassiz (1843) [Sepkoski's age data: J Sine T Dani Sepkoski's reference number: 884]. Its type is Lamna (Sphenodus) longidens.

It was reranked as Lamna (Sphenodus) by Agassiz (1843).

It was assigned to Lamna by Agassiz (1843); to Lamninae by Hay (1902); to Lamnidae by Jordan (1963); to Hexanchiformes by Sepkoski (2002); and to Orthacodontidae by Duffin and Ward (1993), Rees (2000) and Stumpf and Kriwet (2019).

Synonyms
Synonymy list
YearName and author
1843Lamna (Sphenodus) Agassiz p. 288
1843Sphenodus Agassiz p. 288
1889Orthacodus Woodward p. 349
1902Sphenodus Hay p. 302
1963Orthacodus Jordan p. 599
1963Sphenodus Jordan p. 599
1993Sphenodus Duffin and Ward p. 56
2000Sphenodus Rees p. 415
2002Sphenodus Sepkoski, Jr.
2019Sphenodus Stumpf and Kriwet p. 644

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
classChondrichthyes
subclassElasmobranchiiBonaparte 1838
infraclassEuselachii()
NeoselachiiCompagno 1977
orderSynechodontiformes
familyOrthacodontidaede Beaumont 1960
genusSphenodus

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.

Diagnosis
No diagnoses are available