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Trochomphalus dimidiatus
Taxonomy
Euomphalus dimidiatus was named by Koken (1896). It is a 3D body fossil. Its type locality is Porkuni, Siuge Member, which is in a Porkuni perireef or subreef lime mudstone/chert in the Ärina Formation of Estonia. It is the type species of Trochomphalus.
It was recombined as Trochomphalus dimidiatus by Koken and Perner (1925), Wagner (1999), Wagner (2023).
It was recombined as Trochomphalus dimidiatus by Koken and Perner (1925), Wagner (1999), Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1896 | Euomphalus dimidiatus Koken p. 398 |
| 1925 | Trochomphalus dimidiatus Koken and Perner p. 132 figs. pl. 14 f. 8a-b |
| 1999 | Trochomphalus dimidiatus Wagner |
| 2023 | Trochomphalus dimidiatus Wagner p. 1175 |
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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.
†Trochomphalus dimidiatus Koken 1896
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: superf = superfamily, c = class | |||||
| References: Bambach et al. 2007, Kiessling 2004 | |||||
Age range: base of the Richmondian to the top of the Porkuni or 449.60000 to 443.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | USA (Alaska) | Straparollina circe (49349 49350) | |
| Porkuni | Estonia (Rapla) | Euomphalus dimidiatus (172805) |