Arachnocrinus sp., partial articulated arms of a crinoid calys.
Bob Campbell Geology Museum Formation: Onandaga Limestone.
Astrodaspis tumidus, dorso-ventrally falthead specimen
Bob Campbell Geology Museum Formation: Eastover Formation.
Blastoid (Pentremites godoni)
Bob Campbell Geology Museum 325 million years old; Formation: Paint Creek Formation.
Brittle star (Ophiuroidea sp.)
Bob Campbell Geology Museum 450 million years old; Formation: Kataoua Formation.
Crinoid (Crinoidea spp.), 18 stem fragments
Bob Campbell Geology Museum Formation: Winfield Formation.
Crinoid (Crinoidea) three calyx spines (unassociated)
Bob Campbell Geology Museum Formation: Monteagle Limestone.
Crinoid (Crinoidea), 10 partial stems
Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.
Crinoid (Crinoidea), 22 unassociated calyx plates
Bob Campbell Geology Museum Formation: Monteagle Limestone.
Crinoid (Crinoidea), 25 portions of crinoid stems
Bob Campbell Geology Museum Formation: Monteagle Limestone.
Crinoid (Crinoidea), incomplete stem in matrix
Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.
Crinoid (Crinoidea), partial stems
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.