Crinoids
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Ordovician - Bromide Formation
Mississippian
Glyptocystella loeblichi
Bromide Formation, Oklahoma
Excellent inflated cystoid.
15mm (5/8 inch)
£30/$50
Hybocrinus nitidus
Bromide Formation, Oklahoma
Excellent inflated crinoid calyx.
15mm (5/8 inch)
£12/$20
Cremacrinus ramifer
Bromide Formation, Oklahoma
Excellent complete calyx of this
calceocrinid. 15mm (5/8 inch)
£12/$20
Palaeocrinus hudsoni
Bromide Formation, Oklahoma
Excellent inflated crinoid calyx.
15mm (5/8 inch)
£12/$20
Glyptocrinus decadactylus
Maysville Group, Ohio
Excellent inflated crinoid calyx
with arms. ~20mm (3/4 inch)
£15/$25
Culpulocrinus humilis
Richmond Group, Cincinnati
Excellent inflated crinoid calyx
with arms. ~12mm (1/2 inch)
£12/$20
Heterocrinus heterodactylus
Eden Group, Cincinnati
Near complete crinoid
~8mm (3/8 inch) - £12/$20
Ectenocrinus grandis
Eden Group, Cincinnati
Complete crinoid calyx with arms. Excellent details
~25mm (1 inch) - £15/$25
Carabocrinus treadwelli
Bromide Formation, Oklahoma
Complete calyx.
~10mm (1/2 inch) - £12/$20
Glyptocrinus dyeri
Maysville Group, Ohio
Nice crinoid calyx with arms.
~20mm (3/4 inch)
£15/$25
Cincinnatian - Ohio
Pachylocrinus aequalis #3
Edwardsville Formation
Complete crown and stem.
Measures ~60mm (2.25
inches) - £60/$100
Agaricocrinus planoconvexus
Burlington Limestone
Excellent complete calyx. Measures
~20mm (3/4 inch) - £20/$35
Dichocrinus multiplex
Gilmore City Formation
Excellent crowns.
20mm+ (3/4 inch)
£15/$25 Each
Hypselocrinus douglassi
Gilmore City Formation
Excellent crown.
~25mm (1 inch) - £25/$40
Agariocrinus splendens
Muldraugh Formation
Excellent crown.
~50mm (2 inches) - £50/$80
Pachylocrinus aequalis #1
Edwardsville Formation
Excellent complete crown.
Measures ~45mm (1.75 inches)
£50/$80
Phanocrinus formosus
Golconda Formation
Excellent crown.
~45mm (1.75 inches)
£35/$55
Phanocrinus formosus
Golconda Formation
Excellent crown repaired
~30mm (1 inch) £15/$25
(two available)
Phanocrinus formosus
Fraileys Limestone
Two complete crowns on
matrix. Slab measures ~55mm
(2.25 inches) £60/$100
Phanocrinus fragilis
Renault Limestone
Complete microcrinoid
crown. ~6mm (1/4 inch)
£15/$25
Rhodocrinus wortheni double - £20/$35
Gilmore City Formation - Two crowns on matrix.
Slab measures ~55mm (2 inches)
Rhodocrinus serpens - £20/$35
Gilmore City Formation - Complete crown on
matrix. Measures ~30mm (1 inch)
Tholcrinus spinosus
Glen Dean Formation
Complete crown
~25mm (7/8 inch)
£25/$40
Holocystites gyrinus £35/$60
Osgood Shale, Silurian
Very nice inflated calyx.
~45mm (1.75 inches)
Scyralocrinus robustus
Borden Group
Excellent near complete crinoid
~25mm (7/8 inch) - £25/$45
Mississippian - Crawfordsville
Anatifopsis papilata
Rare, near complete mitrate carpoid
Bromide Formation, Oklahoma
Excellent near complete calyx. ~10 mm
£12/$20
Silurian
Pisocrinus sp.
£5/$8
Henryhouse Formation
Upper Silurian, Oklahoma

Very good, complete calyx from this
small yet distinct crinoid.
Each specimen measures ~ 8 to 12mm
Devonian
Heteroschisma gracilis
£15/$25
Thunderbay Limestone
Michigan
Rare Blastoid ~10 mm
Gilbertsocrinus ohioensis - £15/$25
Excellent complete calyx - Silica Shale, Ohio ~15 mm
Abrotocrinus unicus
Edwardsville Formation
Complete crown and stem.
Measures ~25 mm
£15/$25
Oklahomacystis tribrachiatus
Rare, complete paracrinoid
Bromide Formation, Oklahoma
~15 to 20 mm - £20/$35
Eretmocrinus tentor
Gilmore City Formation
Complete crown
~25mm
Similar £20/$35
Blairocrinus trijugis
Choutea Limestone
Complete calyx
~20 - 25mm (7/8 inch)
£20/$35