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Trichohyalidae (disused)
Taxonomy
Trichohyalidae was named by Saidova (1981). It is extant. It was considered unknown by Loeblich and Tappan (1987).
It was assigned to Chilostomelloidea by Loeblich and Tappan (1987).
It was assigned to Chilostomelloidea by Loeblich and Tappan (1987).
Synonymy list
| Year | Name and author |
|---|---|
| 1981 | Trichohyalidae Saidova p. 643 |
| 1987 | Trichohyalidae Loeblich and Tappan |
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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.
Fm. Trichohyalidae Saidova 1981
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Loeblich and H. Tappan 1987 | Test trochospiral, umbilical side partly or wholly obscured by secondary growth of shell material. Oligocene to Holocene. |