|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Hyolithida - Similothecidae
It was corrected as Similotheca bastionense by Skovsted (2006).
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.
|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.