Sollasina woodwardi Sollas, 1899 (type) Sollasina westfalica Richter, 1930 Sollasina cthulhu Rahman et al., 2019 Sollasina is an extinct genus of ophiocistioid that is known from Silurian to Devonian.

[1][2][3] Sollasina cthulhu from the Coalbrookdale Formation of the Silurian Herefordshire Lagerstätte in England was named after H. P. Lovecraft's Cthulhu Mythos.

[1][4] The fossil was 3 cm wide, and the animal was likely the size of a large spider, with 45 tentacle-like tube feet.

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