| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pycnocalyptra
Taxonomy
Pycnocalyptra was named by Schrammen (1937) [Sepkoski's age data: J u]. It is not extant. Its type is Pycnocalyptra calyx.
It was assigned to Hexactinosa by Sepkoski (2002); and to Craticulariinae by Finks et al. (2004).
It was assigned to Hexactinosa by Sepkoski (2002); and to Craticulariinae by Finks et al. (2004).
Species
P. calyx (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Pycnocalyptra Schrammen |
| 2002 | Pycnocalyptra Sepkoski |
| 2004 | Pycnocalyptra Finks et al. |
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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
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Kimmeridgian or 157.30000 to 152.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Oxfordian | Poland | P. calyx (60810) | |
| Kimmeridgian | Germany | P. sp. (74063) | |
| Late/Upper Kimmeridgian | Germany | P. sp. (74100) |