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Xestagnostus

Trilobita - Agnostida - Diplagnostidae

Taxonomy
Xestagnostus was named by Opik (1967) [Sepkoski's age data: Cm Dres-l Sepkoski's reference number: 16]. It is not extant. Its type is Xestagnostus legirupa.

It was assigned to Diplagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).

Synonymy list
YearName and author
1967Xestagnostus Opik
1997Xestagnostus Whittington et al. p. 371
2002Xestagnostus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
superfamilyAgnostoideaM'Coy 1849
familyDiplagnostidaeWhitehouse 1936
genusXestagnostusOpik 1967

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