Hyotissa semiplana
Hyotissa semiplana is an extinct species of large saltwater oysters, a fossil marine bivalve mollusk in the family Gryphaeidae, the foam oysters[1]
| Hyotissa semiplana Temporal range: | |
|---|---|
 | |
| Fossil shells of Hyotissa semiplana from Maastrichtian age, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Ostreida |
| Family: | Gryphaeidae |
| Genus: | Hyotissa |
| Species: | H. semiplana |
| Binomial name | |
| Hyotissa semiplana (de Sowerby, 1825) | |
| Synonyms | |
| |
Description
Fossil shells of Hyotissa semiplana can reach a diameter of about 60 millimetres (2.4 in).[2] They have thick-walled valves, with rough, nodose surface.[3][4]
Distribution
Fossils of this species have been found in the Campanian-Maestrichtian of Poland, in the Santonian-Maestrichtian of Europe and North Africa and in the Campanian of South India.[3][5]
References
- Universal Biological Indexer
- Kreidemuseum
- HALINA PUGACZEWSKA THE UPPER CRETACEOUS OSTREIDAE FROM THE MIDDLE VISTULA REGION (POLAND
- Anne Mehlin Sørensena, Finn Surlyka, John W.M. Jag Adaptive morphologies and guild structure in a high-diversity bivalve faunafrom an early Campanian rocky shore, Ivö Klack (Sweden)
- ANAND K. JAITLY and SANJAY K. MISHRA DISCOVERY OF THE OYSTER HYOTISSA SEMIPLANA (SOWERBY, 1813) FROM THE CAMPANIAN (LATE CRETACEOUS) OF SOUTH INDIA
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