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Aotagnostus

Agnostida - Ptychagnostidae

Taxonomy
Aotagnostus was named by Opik (1979) [Sepkoski's age data: Cm uMid-m Cm uMid-u]. It is not extant.

It was reranked as Triplagnostus (Aotagnostus) by Laurie (1988); it was synonymized subjectively with Ptychagnostus by Jell and Adrain (2002).

It was assigned to Triplagnostus by Laurie (1988); to Agnostida by Sepkoski (2002); and to Ptychagnostidae by Naimark and Pegel (2017).

Synonymy list
YearName and author
1979Aotagnostus Opik
1988Triplagnostus (Aotagnostus) Laurie pp. 200 - 202
2002Aotagnostus Sepkoski
2017Aotagnostus Naimark and Pegel p. 1180

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familyPtychagnostidaeKobayashi 1939
genusAotagnostusOpik 1979

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.

G. †Aotagnostus Opik 1979
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Aotagnostus aotus Öpik 1979
Aotagnostus culminosus Öpik 1979
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Invalid names: Aotagnostus protentus Öpik 1979 [synonym]
Aotagnostus lundgreni Tullberg 1880
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Invalid names: Triplagnostus longitriangularis Lin 1991 [synonym]
Aotagnostus magniceps Öpik 1979
Aotagnostus minutus Lu and Lin 1989
Diagnosis
ReferenceDiagnosis
E. B. Naimark and T. V. Pegel 2017Cephalon with median preglabellar furrow. Posterior glabellar lobe inflated and widened= across M1 (approximately at the middle of M1). Basal= lobes elongated. Pygidium with narrow border, spines small or absent. Axis with equally developed F1 and F2 or F2 weak; large median node strongly deflecting F2; F1 bent forwards; posteroaxis and M2 inflated. Postaxial furrow well developed in adults.