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Extinct genus of marine snails From Wikipedia, the free encyclopedia
Trochonema is an extinct genus of early marine snail from the Paleozoic, which lasted almost 215 million years.[1] It was first described by John William Salter in 1859.[2] Like many genera in the order Murchisoniina, the relationship between it and other large gastropod clades is uncertain.
Trochonema Temporal range: | |
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Trochonema sp. from the middle Ordovician of the Galena Limestone of Minnesota | |
Scientific classification | |
Kingdom: | |
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Order: | Murchisoniina |
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Genus: | Trochonema Salter, 1859 |
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