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Taxonomy
Lepidocrania was named by Cooper and Grant (1974) [Sepkoski's age data: P Asse P Guad-l Sepkoski's reference number: 7]. Its type is Lepidocrania tardispinosa.
It was assigned to Craniidae by Williams et al. (2000); and to Acrotretida by Sepkoski (2002).
It was assigned to Craniidae by Williams et al. (2000); and to Acrotretida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Lepidocrania Cooper and Grant p. 246 |
| 2000 | Lepidocrania Williams et al. p. 176 |
| 2002 | Lepidocrania 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.
G. †Lepidocrania Cooper and Grant 1974
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†Lepidocrania sparsispinosa Cooper and Grant 1974
†Lepidocrania sublamellosa Cooper and Grant 1974
†Lepidocrania tardispinosa Cooper and Grant 1974
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 25 | 2.63 | 1.30 | 4.60 | 3.00 | 0.948 |
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Williams et al. 1996 | |||||
Age range: base of the Asselian to the top of the Capitanian or 298.90000 to 259.51000 Ma
Collections (47 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Asselian | USA (Texas) | L. sparsispinosa (43468 43472 43474 43475 75939 75952) | |
| Artinskian | USA (Texas) | L. sp. (75886) | |
| Kungurian | USA (Texas) | L. sp. (43514 75864 75865 75881) L. tardispinosa (43491 43495 43504 43517 101785 105938 105940 105981) | |
| Roadian | USA (Texas) | L. sp., L. sublamellosa (101767) L. sublamellosa (43548 43553 81645 102602 102614 105726 106021 106109) L. tardispinosa (43554 43563 101782 101783 101807 102603 102604 102610 102615 102621 105805 105874) | |
| Roadian - Wordian | USA (Texas) | L. sublamellosa (106147) | |
| Wordian | USA (Texas) | L. sp. (101867 106138) L. sublamellosa (43550 81695 105821) | |
| Capitanian | USA (Texas) | L. sp. (105894) |