A paleozoic crinoid, Actinocrinus tricuspidatus from carboniferous limestone in Belgium.

Actinocrinus

A paleozoic crinoid, Actinocrinus tricuspidatus from carboniferous limestone in Belgium.

A paleozoic crinoid, Actinocrinus triacontadactylus found in Carboniferous limestone in Lancashire.

Actinocrinus

A paleozoic crinoid, Actinocrinus triacontadactylus found in Carboniferous limestone in Lancashire.

A paleozoic crinoid, Platycrinus trigintidactylus from carboniferous limestone in Ireland.

Platycrinus

A paleozoic crinoid, Platycrinus trigintidactylus from carboniferous limestone in Ireland.