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Tardeceras
Taxonomy
Tardeceras was named by Hyatt and Smith (1905) [Sepkoski's age data: Tr Carn-u Sepkoski's reference number: 302]. Its type is Tardeceras parvum.
It was assigned to Haloritidae by Spath (1951); to Tropiceltitidae by Tozer (1981), Tozer (1994); and to Ceratitida by Sepkoski (2002).
It was assigned to Haloritidae by Spath (1951); to Tropiceltitidae by Tozer (1981), Tozer (1994); and to Ceratitida by Sepkoski (2002).
Species
T. parvum (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Tardeceras Hyatt and Smith p. 44 |
| 1951 | Tardeceras Spath p. 111 |
| 1981 | Tardeceras Tozer p. 98 |
| 1994 | Tardeceras Tozer p. 226 |
| 2002 | Tardeceras Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell diameter | 4 | 17.7 | 15.6 | 22.8 | 16.6 | 3.35 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||