Heterastridium
Heterastridium | |
---|---|
Some Karakorum stones (labelled as Stoliczkaria and Syringosphaera) | |
Scientific classification | |
Kingdom: | Animalia |
Subkingdom: | Eumetazoa |
Phylum: | Cnidaria |
Subphylum: | Medusozoa |
Genus: | Heterastridium |
Heterastridium is a genus of fossil marine Hydrozoan from the Upper Triassic. They are mostly discoid or spherical and some forms found in the Karakorum mountains are called Karakorum stones.[1] They vary in diameter from 1 to 35 cm and appear to follow Cope's rule for the prehistoric climate.
References
- ↑ Erik Flügel (1960) Heterastridium conglobatum conglobatum Reuss, an Upper Triassic Hydrozoan from the Petra-Tou-Roumiou Limestone of Pendakomo, Cyprus. Journal of Paleontology 34(1):127-132
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