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Pachystrophia gotlandicus

Gastropoda - Euomphalina - Holopeidae

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) and 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) and Wagner (2023).

Synonyms
Synonymy list
YearName and author
1884Euomphalus gotlandicus Lindström p. 139 figs. 19-26, not 27-31
1884Ecculiomphalus circinatus Whiteaves p. 35 figs. pl. 5 f. 4, 4a-c, pl. 8 f. 5
1895Euomphalus circinatus Whiteaves p. 86
1907Pachystrophia gotlandicus Spitz p. 138
1916Liomphalus gotlandicus Chapman p. 90
1928Euomphalus gotlandicus Twenhofel p. 249
1980Pachystrophia gotlandicus Rohr p. 164
1981Lytospira gotlandicus Rohr et al.
1999Pachystrophia gotlandicus Wagner
2001Lytospira gotlandicus Rohr and Measures p. 291
2008Pachystrophia gotlandica Rohr et al. p. 604 fig. 3.7–3.10
2023Pachystrophia gotlandicus Wagner

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassEogastropoda
orderEuomphalina
superfamilyEuomphaloidea()
familyHolopeidae
genusPachystrophia
speciesgotlandicus()

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
ReferenceDiagnosis
D. M. Rohr et al. 2008Small 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
Composition: aragoniteg
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Adult height: 10 to < 100g
Folds: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Locomotion: stationaryg
Life habit: epifaunalg
Diet: suspension feederg
Vision: limitedc
Created: 2004-08-14 22:02:50
Modified: 2009-06-05 21:10:20
Source: g = genus, c = class
References: Kiessling 2004, Knight et al. 1960

Age range: base of the Telychian to the top of the Gorstian or 438.50000 to 425.60000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Telychian438.5 - 433.4Norway (Oslo) Euomphalus gotlandicus (49985)
Sheinwoodian433.4 - 430.5Canada (Nunavut) Lytospira gotlandicus (690)
Sheinwoodian433.4 - 430.5Sweden (Gotland) Euomphalus gotlandicus (3975 3977 155697 155698)
Gorstian427.4 - 425.6Canada (Ontario) Ecculiomphalus circinatus (155012)
Gorstian427.4 - 425.6Canada (Nunavut) Lytospira gotlandicus (26008)
Ludlow427.4 - 423.0USA (Alaska) Pachystrophia gotlandica (80381 85025)