| Species | Alsatites laqueolus platystoma (Lange) |
| Author | LANGE |
| Group | Alsatiten/Alpinoceraten |
| Horizon | seebachi-horizon curviornatum-horizon |
| Zone | megastoma-Zone |
| Stage | Middle Hettangian |
Description
This very evolved species has ribs that curve forward and are quite coarse and wide.
The ribs meet on the external side.
The cross-section of the weave is much wider than it is high. The outer side is slightly angled, similar to Alsatites proaries.
* Description according to Kment (2021), supplemented
Compare
At first sight, this very rare species looks like a somewhat coarsely ribbed specimen of Alsatites proaries (Neumayr). However, the very thick coil cross-section is characteristic of the species described by Lange.
Dimension
Dimensions with D= 120mm
Nw % v. D: 62%
Wh % v. D: 21%
Wb % v. D: 34%
Literature
- 1941 Proarietites (Alsatites) laqueolus platystoma subsp. nov. – LANGE, p. 163, pl. 20, fig. 4.
- 2021 Alsatites laqueolus platystoma Lange – KMENT, S. 264, Abb. 10.1
