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Tetraphalerella costellata
Taxonomy
Strophomena costellata was named by Cooper (1956).
It was recombined as Tetraphalerella costellata by Pope (1982).
It was recombined as Tetraphalerella costellata by Pope (1982).
Synonymy list
Year | Name and author |
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1956 | Strophomena costellata Cooper pp. 933-934 figs. pl. 255, A, figs. 1-19 |
1982 | Tetraphalerella costellata Pope pp. L22 - L23 figs. Plate 4, figures 2-6; plate 6, figures 1-2 |
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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.
†Tetraphalerella costellata Cooper 1956
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Diagnosis
Reference | Diagnosis | |
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J. K. Pope 1982 | Shells small; outline semicircular, widest at hingeline, slightly alate; convexity low. Posterior region of dorsal valve with a shallow short sulcus; posterior region of ventral valve with a low short fold. Pseudodeltidium arched, slightly carinate. Parvicostellae very fine, very uniform. |