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Pachystrophia gotlandicus
Taxonomy
Euomphalus gotlandicus was named by Lindström (1884). It is not a trace fossil.
It was recombined as Liomphalus gotlandicus by Chapman (1916); it was recombined as Lytospira gotlandicus by Rohr et al. (1981), Rohr and Measures (2001); it was recombined as Pachystrophia gotlandica by Rohr et al. (2008); it was recombined as Pachystrophia gotlandicus by Spitz (1907), Rohr (1980), Wagner (1999), Wagner (2023).
It was recombined as Liomphalus gotlandicus by Chapman (1916); it was recombined as Lytospira gotlandicus by Rohr et al. (1981), Rohr and Measures (2001); it was recombined as Pachystrophia gotlandica by Rohr et al. (2008); it was recombined as Pachystrophia gotlandicus by Spitz (1907), Rohr (1980), Wagner (1999), Wagner (2023).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Euomphalus gotlandicus Lindström p. 139 figs. 19-26, not 27-31 |
| 1884 | Ecculiomphalus circinatus Whiteaves p. 35 figs. pl. 5 f. 4, 4a-c, pl. 8 f. 5 |
| 1895 | Euomphalus circinatus Whiteaves p. 86 |
| 1907 | Pachystrophia gotlandicus Spitz p. 138 |
| 1916 | Liomphalus gotlandicus Chapman p. 90 |
| 1928 | Euomphalus gotlandicus Twenhofel p. 249 |
| 1980 | Pachystrophia gotlandicus Rohr p. 164 |
| 1981 | Lytospira gotlandicus Rohr et al. |
| 1999 | Pachystrophia gotlandicus Wagner |
| 2001 | Lytospira gotlandicus Rohr and Measures p. 291 |
| 2008 | Pachystrophia gotlandica Rohr et al. p. 604 fig. 3.7–3.10 |
| 2023 | Pachystrophia gotlandicus Wagner |
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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.
†Pachystrophia gotlandicus Lindström 1884
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Invalid names: Pachystrophia circinatus Whiteaves 1884 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. M. Rohr et al. 2008 | Small shells with one complete volution, discoidal, openly coiled, whorl inclined oval in cross-section, weak spiral lines on base, crest at upper-outer edge, width of whorl increases about 4 times per volution. |
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Knight et al. 1960, Kiessling 2004 | |||||
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Telychian | Norway (Oslo) | Euomphalus gotlandicus (49985) | |
| Sheinwoodian | Sweden (Gotland) | Euomphalus gotlandicus (3975 3977 155697 155698) | |
| Sheinwoodian | Canada (Nunavut) | Lytospira gotlandicus (690) | |
| Gorstian | Canada (Nunavut) | Lytospira gotlandicus (26008) | |
| Gorstian | Canada (Ontario) | Ecculiomphalus circinatus (155012) | |
| Ludlow | USA (Alaska) | Pachystrophia gotlandica (80381 85025) |