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Tithonia
Taxonomy
Tithonia was named by Pomel (1883) [Sepkoski's age data: J Bath K Vala Sepkoski's reference number: 956]. Its type is Nucleolites convexus. It is the type genus of Tithoniidae.
It was reranked as Metaporinus (Tithonia) by Jesionek-Szymanska (1963).
It was assigned to Metaporinus by Jesionek-Szymanska (1963); to Disasteridae by Wagner and Durham (1966); to Disasteroida by Sepkoski (2002); and to Tithoniidae by Barras (2007) and Gaillard et al. (2011).
It was reranked as Metaporinus (Tithonia) by Jesionek-Szymanska (1963).
It was assigned to Metaporinus by Jesionek-Szymanska (1963); to Disasteridae by Wagner and Durham (1966); to Disasteroida by Sepkoski (2002); and to Tithoniidae by Barras (2007) and Gaillard et al. (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Tithonia Pomel p. 49 |
| 1963 | Metaporinus (Tithonia) Jesionek-Szymanska p. 384 |
| 1966 | Tithonia Wagner and Durham p. U528 |
| 2002 | Tithonia Sepkoski |
| 2007 | Tithonia Barras p. 154 |
| 2011 | Tithonia Gaillard et al. p. 741 |
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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. †Tithonia Pomel 1883
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†Tithonia berriasensis de Loriol 1873
†Tithonia convexa Catullo 1827
†Tithonia munsteri Desor 1848
†Tithonia oxfordiana Gaillard et al. 2011
†Tithonia praeconvexa Jesionek-Szymanska 1963
†Tithonia transversa Cotteau 1867
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. G. Barras 2007 | Tithoniids with an endocyclic apical disc (cf. Jesionek Szymanska 1963: text-pl. 13, fig. 9). The peristome is angled to face towards the anterior. Plastron plating is amphisternous (Fig. 12B). The pore pairs are microscopic. |