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Fissodus
Taxonomy
Fissodus was named by St. John and Worthen (1875) [Sepkoski's age data: C l C Pn]. It is not extant. Its type is Fissodus bifidus.
It was assigned to Petalodontidae by Woodward (1889), Hay (1902); to Petalodontida by Zangerl (1981), Sepkoski (2002); and to Janassidae by Jordan (1963), Ginter et al. (2010).
It was assigned to Petalodontidae by Woodward (1889), Hay (1902); to Petalodontida by Zangerl (1981), Sepkoski (2002); and to Janassidae by Jordan (1963), Ginter et al. (2010).
Species
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.
G. †Fissodus St. John and Worthen 1875
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Fissodus bifidus Saint John and Worthen 1875
†Fissodus dentatus Eastman 1903
†Fissodus inaequalis Stjohn and Worthen 1875
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Wagner 2023, Carroll 1988, Hendy et al. 2009 | |||||
Age range
Maximum range based only on fossils: Missourian or 306.00000 to 303.70000 Ma
Minimum age of oldest fossil (stem group age): 303.7 Ma
Minimum age of oldest fossil (stem group age): 303.7 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kasimovian | USA (Kansas) | F. dentatus (132973) | |
| Kasimovian | USA (Nebraska) | F. inaequalis (132974) | |
| Missourian | USA (Kansas) | F. dentatus (133264) |