Questions about any large and currently unnamed Ctenacanthiformes sharks known
- arizonia fossils
- asia
- carboniferous
- chondricthyans
- ctenacanthiformes
- devonain
- france
- gilkmanius
- gilkmanius sp.
- graham formation
- great britain
- greenland
- illinois
- kaibab formation
- mainland europe
- mississippian
- missouri
- pennsylvanian
- russia
- saivodus striatus
- saviodus
- st.louis limestone
- texas supershark
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