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Atkinsonella was named by Jordan and Gilbert (1920) [Sepkoski's age data: T Ol]. Its type is Atkinsonella strigilis.

It was assigned to Actinopterygii by Jordan and Gilbert (1920); and to Neogastropoda by Sepkoski (2002).

Synonymy list
YearName and author
1920Atkinsonella Jordan and Gilbert p. 41
2002Atkinsonella Sepkoski, Jr.

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phylumChordataHaeckel 1847
superclassActinopterygii(Cope 1887)

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.

D. S. Jordan and J. Z. Gilbert 1920Head about 4 in length to base of caudal ; depth about 4%. Ver- tebrae longer longer than deep, rather smooth, each mesially constricted and with two ridges and three grooves ; the number probably 24 ( 16 preserved). Neural spines moderate, directed upward and backward, the anterior more curved and directed more backward; ribs strong.
Dorsal fin nearly continuous, the rays about IX, 17, not certainly counted ; first part of 8 to 10 slender spines, the third longest somewhat more than depth of body ; the others progressively shorter ; soft rays long, and apparently all short ; pectoral fin rather short, acute ; the upper rays longest, about 3 times in depth of body. Ventrals inserted just be- hind them; the fin, if correctly interpreted, a little longer than the pec- torals and of about 8 slender rays. Unfortunately this very exceptional character is uncertain as the fin as preserved may be a misplaced fin, possibly a pectoral from the other side.
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Created: 2004-08-17 14:52:40
Modified: 2009-07-20 23:50:42
Source: c = class, subp = subphylum
Reference: Carroll 1988

Age range: Tortonian or 11.62000 to 7.24600 Ma

Collections: one only

Time interval Ma Country or state Original ID and collection number
Tortonian11.62 - 7.246USA (California) A. strigilis (45489)