Stroboceras sp.
publication ID |
https://doi.org/ 10.5852/ejt.2022.831.1871 |
publication LSID |
lsid:zoobank.org:pub:EAA2EAE2-DA8B-4516-B332-CB8423B8EEAA |
DOI |
https://doi.org/10.5281/zenodo.6903232 |
persistent identifier |
https://treatment.plazi.org/id/9327592F-F43B-1943-FD02-1B74FAB45615 |
treatment provided by |
Felipe |
scientific name |
Stroboceras sp. |
status |
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Fig. 13 View Fig , Table 7 View Table 7
Material examined
ALGERIA • 1 specimen; Sebkha de Timimoun 14.5 km west-southwest of Timimoun (locality TIM-C8); Argiles de Timimoun supérieur (Upper Bollandoceras Assemblage ; early to middle Viséan); Korn et al. 2002 Coll.; illustrated in Fig. 13 View Fig ; MB.C.30460 .
Description
The only specimen present is a phragmocone fragment consisting of three chambers ( Fig. 13A View Fig ). It has, at 10.5 mm whorl height, a depressed pentagonal whorl profile (ww/wh = 1.44). It shows a prominent, rounded ventrolateral shoulder accompanied by shallow longitudinal grooves. The centre of the venter is shallowly convex and the umbilical margin separates the weakly convex flank from the almost flat umbilical wall by a low ridge ( Fig. 13B View Fig ). A narrow, very shallow concave whorl zone is present. The suture line shows a course dependent on the outline of the whorl profile; saddles lie in the inflated areas of the profile and lobes in the indented ones ( Fig. 13C View Fig ). Therefore, the external lobe appears trilobate and the ventrolateral saddle is raised. An internal lobe is induced by the concave whorl zone.
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