| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Astraea (Megastraea)
Taxonomy
Astraea (Megastraea) was named by McLean (1970). It is extant.
It was reranked as Megastraea by Alf (2019).
It was assigned to Astraea by McLean (1970) and Keen (1971); and to Turbinidae by Alf (2019).
It was reranked as Megastraea by Alf (2019).
It was assigned to Astraea by McLean (1970) and Keen (1971); and to Turbinidae by Alf (2019).
Species lacking formal opinion data
Synonymy list
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Subg. Astraea (Megastraea) McLean 1970
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. H. McLean 1970 | Shell exceptionally large, exceeding in height; periostracum thick, forming raised lamellae. Outer face of operculum bearing 3 (or 4, counting the small, upper marginal rib) raised, spinose ridges. | |
| A. Alf 2019 | Shell large, broad coniform, imperforate, whorls straight to shouldered, strong sculpture consisting of oblique axial ridges, one or two wavy spiral ridges on periphery, periostracum brown, thick, forming raised lamellae, outer surface of operculum with three raised, tuberculate ridges. |