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Morphology Ecology and taphonomy   Age range and collections

Ptychagnostus intermedius

Trilobita - Agnostida - Ptychagnostidae

Taxonomy
Agnostus intermedius was named by Tullberg (1880). It is not extant.

It was recombined as Ptychagnostus intermedius by Robison (1984).

Synonymy list
YearName and author
1880Agnostus intermedius Tullberg
1984Ptychagnostus intermedius Robison

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
familyPtychagnostidaeKobayashi 1939
genusPtychagnostusJaekel 1909
speciesintermedius(Tullberg 1880)

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