Brittle star

Fossil

Also called Ophiuroid and Serpent star

About it

Slender, snaky arms set sharply off a small round central disc, unlike a starfish's broad arms. Slabs crowded with them come from the Jurassic of Dorset, England; others from Germany's Hunsrück Slate and Morocco.

Type
Fossil (echinoderm)
Group
Ophiuroid (echinoderm)
Colours
grey, brown, tan, cream
Transparency
opaque
Periods
Ordovician, Devonian, Jurassic

Typical values: real specimens vary. For more, see mindat.org.