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Similotheca bastionense
Taxonomy
Similotheca bastionensis was named by Malinky and Skovsted (2004). Its type specimen is MGUH 27082, a shell, and it is not a trace fossil. Its type locality is GGU 314835 - Albert Heim Bjerge, which is in a Dyeran carbonate limestone in the Bastion Formation of Greenland.
It was corrected as Similotheca bastionense by Skovsted (2006).
It was corrected as Similotheca bastionense by Skovsted (2006).
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Similotheca bastionensis Malinky and Skovsted pp. 554 - 555 figs. 2B, ?C |
| 2006 | Similotheca bastionense Skovsted |
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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.
†Similotheca bastionense Malinky and Skovsted 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Malinky and C.B. Skovsted 2004 | Similotheca having coarse transverse rugae on the dorsum and narrow longitudinal concavities immediately adjacent to the dorsal keel.
Conch orthoconic with large apical angle such that conch has wide appearance; venter flat, grading into sharp, bluntly rounded lateral edges; dorsum low with prominent, well−developed median ridge; side of ridge marked by prominent ribs; each dorsal flank has a narrow, shallow longitudinal concavity adjacent to the median ridge, and the flanks overall are only slightly inflated, with a gentle slope away from the ridge. Venter flat, with faint transverse growth lines on shell; ligula seemingly long and rounded at anterior edge, with steeply dipping sides. |