Ophiuroid+

1. (Ophiuroid) indet.
2. (Crinoid) Ectenocrinus simplex
3. (Crinoid) Cincinnaticrinus varibrachialus
4. (Trilobite) Flexicalymene granulosa

• Ordovician
• Kope Formation
• Cincinnati, Ohio, USA

Size: 2.5 cm across the arms for the Ophiuroid