Crinoid (Crinoidea), partial stems
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Wythella eldridgei, echinoid test embedded in limestone
Bob Campbell Geology Museum Formation: Ocala Limestone.
Crinoid (Crinoidea), stem fragments
Bob Campbell Geology Museum Formation: Plattsburg Limestone; Member: Spring Hill Limestone.
Pentremites sp., crushed, incomplete specimen in matrix
Bob Campbell Geology Museum Formation: Monteagle Limestone.
Sea urchin (Cidaridae), miscellaneous spines
Bob Campbell Geology Museum Formation: Santee Limestone.
Oligopygus haldermani, 22 echinoid tests, oval circular outline
Bob Campbell Geology Museum Formation: Ocala Limestone.
Hydreinocrinus sp., stem section
Bob Campbell Geology Museum Formation: Harpersville Formation; Belknap Ls. Mbr.
Blastoid (Pentremites godoni)
Bob Campbell Geology Museum 325 million years old; Formation: Paint Creek Formation.
Crinoid (Crinoidea), incomplete stem in matrix
Bob Campbell Geology Museum Formation: Altamont Limestone; Member: Amoret Limestone.