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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
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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.
Subg. Astraea (Megastraea) McLean 1970
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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. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Collections
No collection or age range data are available