Sollasina

Sollasina is an extinct genus of ophiocistioid that is known from Silurian to Devonian.

Taxonomy
Sollasina cthulhu from the Coalbrookdale Formation of the Silurian Herefordshire Lagerstätte in England was named after H. P. Lovecraft's Cthulhu Mythos. The fossil was 3 cm wide, and the animal was likely the size of a large spider, with 45 tentacle-like tube feet.