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.
Delocrinus cf. subhemisphericus, isolated radial
Bob Campbell Geology Museum Formation: Harpersville Formation; Belknap Ls. Mbr.
Delocrinus cf. subhemisphericus, isolated radial
Bob Campbell Geology Museum Formation: Harpersville Formation; Belknap Ls. Mbr.
Delocrinus cf. subhemisphericus, two spinous plates
Bob Campbell Geology Museum Formation: Harpersville Formation; Belknap Ls. Mbr.
Dendraster gibsii, 7 isolated tests and one cluster of 4
Bob Campbell Geology Museum Formation: Etchegoin Formation.
Echinocrinus aculeata, isolated plate of an echinoid test
Bob Campbell Geology Museum Formation: Grenola Limestone.
Enallaster texanus, complete test
Bob Campbell Geology Museum Formation: Fredericksburg Formation; Goodland Ls. Mbr.
Enallaster texanus, complete test
Bob Campbell Geology Museum Formation: Fredericksburg Formation; Goodland Ls. Mbr.