Grewingkia canadensis. two solitary rugose corals in limestone
Bob Campbell Geology Museum Formation: McMillan Formation.
Grewingkia canadensis, large rugose coral, embedded in limestone
Bob Campbell Geology Museum Formation: McMillan Formation.
Zaphrentis sp., three incomplete corals, conical, wide cir. calyx
Bob Campbell Geology Museum Formation: Citronelle Formation.
Cellepora cf. massalis, two partial colonies
Bob Campbell Geology Museum Formation: Eastover Formation.
Grewingkia canadensis, limestone fragment with two rugose corals
Bob Campbell Geology Museum Formation: McMillan Formation.
Favistina stellata, colonial rugose coral with 12 short septa
Bob Campbell Geology Museum Formation: McMillan Formation.
Endopachys sp., steinkern showing internal morphology
Bob Campbell Geology Museum Formation: Tupelo Bay Formation.
Astrhelia sp., three large fragments of branching colonial coral
Bob Campbell Geology Museum Formation: Yorktown Formation.
Astrhelia sp., stout ebony with a thick walled skeleton
Bob Campbell Geology Museum Formation: Coastal plain deposits.
Chain coral (Halysites sp.)
Bob Campbell Geology Museum 440 million year old; Formation: Allan Bay Formation; Donated: Jody Tinsley.
Colonial horn coral (Hexagonaria sp.)
Bob Campbell Geology Museum 325 million years old; Formation: Salem & Warsaw Formation.
Coral 'Petosky Stone' (Hexagonaria percarinata), state stone of Michigan
Bob Campbell Geology Museum 350 million years old; Donated: H. Abercrombie.
Streptelasma sp., three incomplete corals, elongated, narrow and sharply tapering
Bob Campbell Geology Museum Formation: Whitewood Formation.
Favosites canadensis, massive colony with long, narrow, closely packed corallites
Bob Campbell Geology Museum Formation: Onandaga Limestone; Nedrow mem.