| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Giraldiella protensa
Taxonomy
Orthis protensa was named by de Sowerby (1839).
It was recombined as Giraldiella protensa by Williams (1951), Temple (1987).
It was recombined as Giraldiella protensa by Williams (1951), Temple (1987).
Subspecies
Sister species lacking formal opinion data
Synonyms
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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.
†Giraldiella protensa de Sowerby 1839
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†Giraldiella protensa protensa Sowerby 1839
Invalid names: Giraldiella lata de Sowerby 1839 [synonym]
†Giraldiella protensa filitexta Williams 1951
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Williams 1951 | Unequally biconvex to resupinate Giraldiellas with a sharply sulcate dorsal valve and ornamented by multicostellate ribs. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Hendy 2009 | |||||
Age range: Rhuddanian or 443.10000 to 440.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rhuddanian | United Kingdom (Wales) | Giraldiella protensa (3459 5083) |