Clays Ferry Formation, Bluegrass Parkway

Don Chesnut

Clays Ferry Formation, Ordovician, Bluegrass Parkway

Phylum Brachiopoda

Class Articulata

Order Strophomenida

• Sowerbyella sp. This slab contains abundant Sowerbyella brachiopods.
• Sowerbyella sp. Another slab with abundant Sowerbyella.

Phylum Mollusca

Class Bivalvia

• Pelecypod No. 1, unidentified pelecypod. This is unusual in that the shell is preserved and both valves are articulated.
• Pelecypod No. 2, slab with two pelecypods.

Phylum Bryozoa

• Constellaria floridans, showing star-shaped zooidal platforms (not monticules).

North Vernon Limestone, Devonian, Liters Quarry, Indiana

Phylum Brachiopoda

• Spinocyrtia sp.
• Spinocyrtia sp.,
• Atrypa sp.
• spiral brachidium of Atrypa

Phylum Cnidaria

• coral

Waldron Shale, Silurian, Liters Quarry, Indiana

Phylum Brachiopoda

• Leptaena sp.
• rhynchonellid
• unknown brachiopod A
• unknown brachiopod B

Unknown fossil

Brush Creek Limestone, Upper Pennsylvanian, near Huntington, West Virginia

Phylum Brachiopoda

• chonetids, note spines along hinge
• productid brachiopod

Phylum Mollusca

Gastropoda

• Pharkidonatus, planispiral gastropod

Phylum Echinodermata

Crinoidea

• Plaxocrinus tegmenal spine, lower side
• Plaxocrinus tegmenal spine, upper side
• Plaxocrinus primibrachial spine, lower side
• Plaxocrinus primibrachial spine, upper side

Phylum Arthropoda

Trilobita

• Phillipsia pygidium