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Taxonomy
Gigantocyclus zidensis was named by Termier and Termier (1977) [Holotype in collection of H. and G. Termier (Paris)]. Its type specimen is HGT 488, a valve (Left valve), and it is not a trace fossil. Its type locality is Baten beni Zid Series, Djebel Tebaga, which is in a Wordian marine marl/carbonate in Tunisia. It is the type species of Gigantocyclus.
Synonymy list
| Year | Name and author |
|---|---|
| 1977 | Gigantocyclus zidensis Termier and Termier p. 85 fig. 42 |
| 1979 | Gigantocyclus zidensis Boyd and Newell p. 20 fig. 23 |
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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.
†Gigantocyclus zidensis Termier and Termier 1977
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 11 | 55.6 | 47.0 | 66.0 | 56.0 | 5.91 |
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | Tunisia (Madanin) | Gigantocyclus zidensis (type locality: 42091) | |
| Capitanian | Tunisia (Madanin) | Gigantocyclus zidensis (41663) |