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Calcancoridae
Taxonomy
Calcancoridae was named by Frizzell and Exline (1955). It is not extant. It is considered to be a form taxon.
It was assigned to Holothuroidea by Frizzell and Exline (1955), Deflandre-Rigaud (1962); and to Apodida by Pawson (1966), Frizzell and Exline (1966).
It was assigned to Holothuroidea by Frizzell and Exline (1955), Deflandre-Rigaud (1962); and to Apodida by Pawson (1966), Frizzell and Exline (1966).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1955 | Calcancoridae Frizzell and Exline |
| 1962 | Calcancoridae Deflandre-Rigaud p. 88 |
| 1966 | Calcancoridae Frizzell and Exline p. U645 |
| 1966 | Calcancoridae Pawson p. U645 |
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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.
Fm. †Calcancoridae Frizzell and Exline 1955
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G. †Costigerites Deflandre-Rigaud 1962
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Costigerites indicus Soodan 1991
†Costigerites piveteaui Deflandre-Rigaud 1962
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan 1992, Arkadiev and Bugrova 1999, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: Oxfordian or 161.50000 to 154.80000 Ma
Minimum age of oldest fossil (stem group age): 154.8 Ma
Minimum age of oldest fossil (stem group age): 154.8 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Oxfordian | France (Basse Normandie) | Costigerites piveteaui (94628) |