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Deltina
Taxonomy
Deltina was named by Sundberg (1994) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 1089]. Its type is Deltina limba.
It was assigned to Ptychopariina by Sundberg (1994); to Ptychopariida by Sepkoski (2002); and to Ptychopariidae by Jell and Adrain (2002).
It was assigned to Ptychopariina by Sundberg (1994); to Ptychopariida by Sepkoski (2002); and to Ptychopariidae by Jell and Adrain (2002).
Species
D. angustigena, D. limba (type species)
Entered
by J. Sepkoski on 2003-01-23; modified by J. Marcot on 2022-08-16
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Deltina Sundberg p. 107 |
| 2002 | Deltina Jell and Adrain p. 478 |
| 2002 | Deltina Sepkoski |
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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. †Deltina Sundberg 1994
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†Deltina angustigena Sundberg 1994
†Deltina limba Sundberg 1994
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. A. Sundberg 1994 | Small Ptychopariida with subrec- tangular cranidium with a relatively large glabella elevated well above fixigena; moderately convex transversely; parallel to slightly convergent, mod- erate depth axial furrows; shallow to moderately shallow lateral glabellar furrows; rounded frontal lobe; downsloping, moderately narrow fixigenae; narrow or absent preglabellar field; convex, mod- erately to moderately strong curved, transversely wide, sagittally narrow, slightly tapering anterior border; moderate to short length palpebral lobes; moderate length posterior area of fixigenae. |