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Cyclopidius californicus
Taxonomy
Leptauchenia (Sespia) californica was named by Stock (1930). Its type specimen is UCMP 27720, a partial skull (Facial and palatal portions of skull and portions of horizontal rami of lower jaw), and it is a 3D body fossil. Its type locality is Morgan Canyon, South Mountain (UCMP V-75003), which is in an Arikareean fluvial-lacustrine sandstone/mudstone in the Sespe Formation of California.
It was recombined as Cyclopidius californica by Schlaikjer (1935); it was recombined as Cyclopidius californicus by Thorpe (1937); it was synonymized subjectively with Sespia nitida by Lander (1983), Lander (1998); it was recombined as Sespia californica by Schultz and Falkenbach (1968), Mason and Swisher (1989), CoBabe (1996), Hoffman and Prothero (2003), Hoffman and Prothero (2004), Stevens and Stevens (2007).
It was recombined as Cyclopidius californica by Schlaikjer (1935); it was recombined as Cyclopidius californicus by Thorpe (1937); it was synonymized subjectively with Sespia nitida by Lander (1983), Lander (1998); it was recombined as Sespia californica by Schultz and Falkenbach (1968), Mason and Swisher (1989), CoBabe (1996), Hoffman and Prothero (2003), Hoffman and Prothero (2004), Stevens and Stevens (2007).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Leptauchenia (Sespia) californica Stock |
| 1935 | Cyclopidius californica Schlaikjer |
| 1937 | Cyclopidius californicus Thorpe p. 242 figs. PLXXXVII, figs. 1-5 |
| 1968 | Sespia californica Schultz and Falkenbach p. 241 |
| 1989 | Sespia californica Mason and Swisher p. 3 |
| 1996 | Sespia californica CoBabe p. 578 |
| 2003 | Sespia californica Hoffman and Prothero |
| 2004 | Sespia californica Hoffman and Prothero p. 156 figs. Figures 1-2, Tables 1-2 |
| 2007 | Sespia californica Stevens and Stevens p. 158 |
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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.
†Cyclopidius californicus Stock 1930
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Hoffman and D. R. Prothero 2004 | Smallest known species of Sespia; infraorbital fora-men above anterior border of P4. |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Lander 1998, Lillegraven 1979, Carroll 1988, Nowak 1999, Hendy et al. 2009 | |||||
Age range: Arikareean or 29.50000 to 18.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Arikareean | USA (California) | Leptauchenia californica (type locality: 17684) |