''Alisina'' is a
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...
genus of
Obolellid brachiopod from which soft tissue (including pedicle) is known.
References
Brachiopod genera
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