Fish species distribution within the Columbus and Delaware Limestone. 
(Wells, J.W., 1944, Palaeontographica Americana).

GROUP

TYPE

Central Ohio
Bone Beds
1 2 3 4
Agnathid Indeterminate drepanaspid plates X
Agnathid Ohioaspis tumulosus, n.g., n.sp.                                                  
Agnathid                        forma typicus X X X X
Agnathid                        forma turritus X X X
Agnathid                        forma clavulus X X
Agnathid                        forma hystricosus X X X
Agnathid Ohioaspis impositus, n. sp. X X
Agnathid Ohioaspis lamellatus X
Acanthodian Cheiracanthoides comptus, n.g., n.sp. X X X X
Acanthodian Cheiracanthoides comis, n.sp. X X X X
Acanthodian Cheiracanthoides venustus, n.sp. X X X X
Acanthodian Cheiracanthoides breviplicatus, n.sp. X X X
Acanthodian Helolepis bellarugosus, n.g., n.sp X X
Acanthodian Helolepis venustuloides, n.sp. X X X
Acanthodian Acanthoides hardyi, n.sp. X X X
Acanthodian Acanthoides sciotoensis, n.p. X X X X
Acanthodian Acanthoides dublinensis (Stauffer) X X X X
Acanthodian Plectrodus ohioensis, n.sp. X X X
Acanthodian Plectrodus multidentatus, n.sp. X X
Acanthodian Plectrodus aculeatus n.sp. X X
Acanthodian Machaeracanthus major (Newberry) X
Acanthodian Gyracanthus ? eastmani, n.sp. X X
Arthrodire Coccosteus spatulatus (Newberry) X X
Arthrodire Ptyctodus, sp. X
Arthrodire Rhynchodus, sp. X X
Arthrodire Palaeomylus, sp. X X
Selachian Ohiolepis newberryi, n.g., n.sp. X X X X
Selachian Ohiolepis stewartae, n.sp. X X X
Selachian Deirolepis carinatus, n.g., n.sp. X X X
Crossopterygian Onychodus sigmoides (Newberry) X X X X
Marc Behrendt
421 S. Columbus St.
Somerset, Ohio 43783-9503
740-743-2818
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