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Stevea
Taxonomy
Stevea was named by Manning and Holthuis (1981). It is extant. Its type is Stevea williamsi.
It was assigned to Hexapodidae by Beschin et al. (1994), Schweitzer and Feldmann (2001), Schweitzer (2005), Karasawa and Schweitzer (2006), Beschin et al. (2009), Schweitzer et al. (2010), Guinot et al. (2011), Feldmann et al. (2014), Schweitzer et al. (2022).
It was assigned to Hexapodidae by Beschin et al. (1994), Schweitzer and Feldmann (2001), Schweitzer (2005), Karasawa and Schweitzer (2006), Beschin et al. (2009), Schweitzer et al. (2010), Guinot et al. (2011), Feldmann et al. (2014), Schweitzer et al. (2022).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1981 | Stevea Manning and Holthuis |
| 1994 | Stevea Beschin et al. p. 191 |
| 2001 | Stevea Schweitzer and Feldmann p. 337 |
| 2005 | Stevea Schweitzer p. 289 |
| 2006 | Stevea Karasawa and Schweitzer p. 58 |
| 2009 | Stevea Beschin et al. p. 76 |
| 2010 | Stevea Schweitzer et al. p. 136 |
| 2011 | Stevea Guinot et al. p. 285 |
| 2014 | Stevea Feldmann et al. p. 141 |
| 2022 | Stevea Schweitzer et al. p. 18 |
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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. Stevea Manning and Holthuis 1981
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†Stevea cesarii Beschin et al. 1994
†Stevea martini Feldmann et al. 2014
Stevea williamsi Glassell 1938
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Turnsek 1997, Aberhan 1992 | |||||
Age range
Maximum range based only on fossils: base of the Danian to the top of the Lutetian or 66.00000 to 41.03000 Ma
Minimum age of oldest fossil (stem group age): 61.66 Ma
Minimum age of oldest fossil (stem group age): 61.66 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Danian | USA (Alabama) | S. martini (164850) | |
| Ypresian | Italy | S. cesarii (207595) | |
| Lutetian | Italy | S. cesarii (176657) | |
| Lutetian | Italy (Vicenza) | S. cesarii (184968) |