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Agnostus tardus

Trilobita - Agnostida - Agnostidae

Taxonomy
Battus tardus was named by Barrande (1846). It is the type species of Arthrorhachis.

It was recombined as Trinodus tardus by Barrande (1846) and Kielan (1960); it was recombined as Arthrorhachis tarda by Hall and Corda (1847) and Ahlberg (1989); it was recombined as Agnostus tardus by Barrande (1852); it was recombined as Arthrorhachis tardus by Hoel (1999).

Sister species lacking formal opinion data

View classification of included taxa

Synonyms
Synonymy list
YearName and author
1846Trinodus tardus Barrande
1847Arthrorhachis tarda Hall and Corda
1851Agnostus glabratus Angelin
1852Agnostus tardus Barrande
1960Trinodus tardus Kielan
1989Arthrorhachis tarda Ahlberg
1999Arthrorhachis tardus Hoel

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
familyAgnostidaeM'Coy 1849
genusAgnostusBrongniart 1822
speciestardus(Barrande 1846)

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