''Leptomitus'' is a genus of

demosponge Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a har ...

known from the Middle

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 ...

Burgess Shale. Its name is derived from the Greek ''lept'' ("slender") and ''mitos'' ("thread"), referring to the overall shape of the sponge. 138 specimens of ''Leptomitus'' are known from the Greater Phyllopod bed, where they comprise 0.26% of the community.

References

External links

* Burgess Shale fossils Protomonaxonida Prehistoric sponge genera Burgess Shale sponges Cambrian genus extinctions {{paleo-sponge-stub