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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ledahia
Taxonomy
Ledahia is a genus. It is not extant.
It was assigned to Healdiidae by Harloff and Jäger (1994); and to Metacopida by Sepkoski (2002).
It was assigned to Healdiidae by Harloff and Jäger (1994); and to Metacopida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Ledahia Harloff and Jäger p. 36 |
| 2002 | Ledahia 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.
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| valve height | 1 | 0.270 |
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| Source: o = order, c = class | |||||
| References: Jell and Adrain 2002, Kiessling 2004 | |||||
Age range: base of the Raricostatum to the top of the Tenuicostatum or 196.50000 to 182.00000 Ma
Collections (22 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Raricostatum | Germany | L. bispinosa (139811 139813 139814 139815) | |
| Davoei | France | Pseudohealdia bispinosa (33624 33625 33627 33628) Pseudohealdia bispinosa, L. septenaria (33622) | |
| Davoei | Germany | L. bispinosa (139822) | |
| Early/Lower Pliensbachian | Hungary | L. bispinosa (108869) | |
| Early/Lower Pliensbachian | Germany | L. bispinosa (139818 139819 139820 139821) | |
| Margaritatus | France | L. septenaria (33630) Pseudohealdia bispinosa (33629 33631) Pseudohealdia bispinosa, L. septenaria (33633 33634 33635) | |
| Tenuicostatum | Portugal | L. septenaria (158469) |