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Janassa linguaeformis

Chondrichthyes - Petalodontiformes - Janassidae

Taxonomy
Climaxodus linguaeformis was named by Atthey (1868). Its type specimen is BMNH 41211, a tooth, and it is a compression fossil. Its type locality is Newcastle-upon-Tyne (BMNH), which is in a Kasimovian/Moscovian marine horizon in the United Kingdom.

It was recombined as Janassa linguaeformis by Woodward (1889).

Synonymy list
YearName and author
1868Climaxodus linguaeformis Atthey
1889Janassa linguaeformis Woodward p. 36

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
RankNameAuthor
classChondrichthyes
subclassHolocephali(Bonaparte 1832)
orderPetalodontiformes()
familyJanassidaeJaekel 1899
genusJanassa
specieslinguaeformis(Atthey 1868)

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