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Tetradium
Discussion
Was thought to be a sponge; later recognized to be an algae.
Taxonomy
Tetradium was named by Dana (1846) [Sepkoski's age data: O Llde-u O Ashg-u Sepkoski's reference number: 160]. It is not extant.
It was replaced with Prismostylus by Pojeta et al. (2003).
It was assigned to Tetradiidae by Murray (1985); to Tabulata by Sepkoski (2002); and to Rhodophyta by Steele-Petrovich (2009).
It was replaced with Prismostylus by Pojeta et al. (2003).
It was assigned to Tetradiidae by Murray (1985); to Tabulata by Sepkoski (2002); and to Rhodophyta by Steele-Petrovich (2009).
Species lacking formal opinion data
Synonymy list
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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.
Diagnosis
No diagnoses are available