Zurcheria
| Zurcheria Temporal range: Middle Jurassic | |
|---|---|
| Fossil | |
| Scientific classification | |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Hildocerataceae |
| Family: | Sonniniidae |
| Genus: | Zurcheria Douville, 1885 |
Zurcheria is a dwarf ammonite from the Middle Jurassic included in the Sonniniidae and lacking a keel. The shell is evolute, inner whorls exposed; whorls compressed and slightly overlapping. Bears ribs, which are sinuous folds that project strongly onto the arched venter.
References
- W.J. Arkell, et al., 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press.
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