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Protatrypinae
Taxonomy
Protatrypinae was named by Baarli et al. (2022). Its type is Protatrypa.
It was assigned to Atrypida by Baarli et al. (2022).
It was assigned to Atrypida by Baarli et al. (2022).
Subtaxa
Dihelictera, Eiratrypa, Nottina, Procarinatina, Protatrypa (type genus), Zygospiraella (syn. Megumatrypa)
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Protatrypinae Baarli et al. p. 8 |
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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.
Subfm. †Protatrypinae Baarli et al. 2022
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G. †Dihelictera Copper 1995
G. †Eiratrypa Baarli 2022
G. †Procarinatina Mizens and Sapelnikov 1982
G. †Protatrypa Boucot et al. 1964
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†Protatrypa malmoeyensis Boucot et al. 1964
†Protatrypa thorslundi Boucot and Johnson 1964
G. †Zygospiraella Nikiforova 1961
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†Zygospiraella duboisi Verneuil 1845
†Zygospiraella venusta Rong and Yang 1981
Invalid names: Megumatrypa [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. G. Baarli et al. 2022 | The Protatrypinae consists of genera with medium to small biconvex shells, a low profile, and a rectimarginate to weakly plicate anterior commissure. The interarea is ortho- to anacline, and the beak has a foramen with delthidal plates. The shells are costate with simple lamellae, and a weak carination is mostly present. Internally, the shell wall is thin; there are weak impressions of the ventral muscle scars, the mainly slen- der teeth have dental nuclei or small cavities, and they lack crural notches. The hinge pad is high and solid, as most typically developed in Protatrypa Boucot, Johnson & Staton, 1964. |