Arachnocrinus sp., partial articulated arms of a crinoid calys.
Bob Campbell Geology Museum Formation: Onandaga Limestone.
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.
Crinoid (Crinoidea), stem fragments
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Crinoid (Endelocrinus sp.)
Bob Campbell Geology Museum 287 million years old; Formation: Lecompton Limestone; Donated: Andy Epton.
Crinoid (Jimbacrinus bostoki) sea lily
Bob Campbell Geology Museum 260 million years old; Formation: Cundlego Formation.
Crinoid stem coquina (Platycrinus penicillus)
Bob Campbell Geology Museum 330 million years old; Formation: St. Genevieve Formation.
Crinoid stem coquina (Talarocrinus simplex)
Bob Campbell Geology Museum 350 million years old; Formation: Salem & Warsaw Formation.