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Michigan Fossils - Student Worksheets – Larger Format – Page 1 of 6 A1 - BRACHIOPOD, invertebrate - A2 - BRACHIOPOD, invertebrate - Pentamerus sp. - Cordell dolomite - Mucrospifier profundus - Silica formation Silurian age - Chippewa Co. - 65 mm, - Devonian age - Washtenaw Co. - 50 mm, internal cast or steinkern - R. Elowski calcite replacement - R. Milstein A3 - TRILOBITE, invertebrate - Phacops A4 - CORAL or COLONIAL CORAL, rana - Silica formation - Devonian age - invertebrate - Syringopora sp. - Cordell Washtenaw Co. - 70 mm, calcite dolomite - Silurian age - Chippewa Co. - replacement - S. Wilson 125 mm, siliceous replacement - R. Milstein Michigan Fossils - Student Worksheets – larger format – page 1 of 6 C1 - MASTODON Tooth, vertebrate - C2 - EUCARYOTIC algae filaments, plant - Mammut americanum - Glacial deposit - Grypania spiralis - Negaunee Iron Quaternary age - 200 mm long, the Formation - Precambrian age - Marquette “Michigan State Fossil” - Central Michigan Co. - large loop about 20 mm , oldest Univ. Rowe Museum macrofossil - GSD C3 - FISH plate, vertebrate - genus not C4 - Septarian nodule - pseudo fossil - - determined - Alpena Limestone - Devonian Ottawa Co. - 75 mm, Looks like a fossil, it age - Alpena Co. - 200 mm at widest point, is not. - S. Wilson calcite replacement - S. Wilson Michigan Fossils - Student Worksheets – larger format – page 2 of 6 E2 - CORAL or COLONIAL CORAL, E1 - CRINOID, invertebrate - Megistocrinus invertebrate - Favosites sp. - Alpena concava - Thunder Bay limestone - Devonian Limestone - Devonian age - Charlevoix Co. - age - Alpena Co. - 30 mm, calcite 100 mm (shown), siliceous replacement - R. replacement - S. Wilson Reszka E3 - BRACHIOPOD, invertebrate - E4 - CEPHALOPOD, invertebrate - Mucrospifler mucronatus - Silica formation - Michelinoceras sp. - Ogontz limestone - Devonian age - Washtenaw Co. - 90 mm, Ordovician age - Alger Co. - 100 mm, calcite replacement - R. Milstein internal cast or steinkern - R. Milstein Michigan Fossils - Student Worksheets – larger format – page 3 of 6 B1 - CORAL or CHAIN CORAL, B2 - CRINOID pieces, invertebrate - invertebrate - Halysites sp. - Cordell Megistocrinus sp. ? - Alpena limestone - dolomite - Silurian age - Chippewa Co. - Devonian age - Alpena Co. - 30 mm (lower 110 mm, siliceous replacement - R. right) , calcite replacement - GSD Milstein B3 - SNAIL or GASTROPOD, invertebrate - B4 - CORAL or COLONIAL CORAL Petoskey genus not determined - Cordell dolomite - Stone, invertebrate - Hexagonaria Silurian age - Chippewa Co. - 75 mm, percarinata - Alpena Limestone - internal cast or steinkern - GSD Devonian age - Charlevoix Co. - 200 mm, calcite replacement - R. Milstein Michigan Fossils - Student Worksheets – larger format – page 4 of 6 D1 - BANDED IRON FORMATION (BIF), D2 - PLANT root section, plant - from fossils - result of Grypania and Stigmaria, genus not determined - others - Banded Iron Formation - Saginaw Formation - Pennsylvanian age - Precambrian age - Marquette Co. - 600 Eaton Co. - 150 mm in diameter, internal mm, rock walkway at the - Eddy Center cast - T. Godbold D3 - Kona Dolomite, plant - Algal in origin D4 - ALGAL stromatolite, plant - Collenia - Kona Formation - Precambrian age - undosa - Copper Harbor Conglomerate - Marquette Co. - 150 by 200 mm, Precambrian age, 1,100 - Keweenawan metamorphosed to a marble - GSD Co. - 100 mm, - S. Wilson Michigan Fossils - Student Worksheets – larger format – page 5 of 6 F1 - BRYOZOAN, invertebrate - F2 - CLAM or PELECYPOD, invertebrate - Sulcoretepora deissi - Silica formation - Megalomus canadensis - Cordell dolomite Devonian age - Washtenaw Co. - 25 mm, - Silurian age - Chippewa Co. - 60 x 75 calcite replacement - S. Wilson mm, internal cast or steinkern - GSD F3 - CORAL or COLONIAL CORAL, F4 - STROMATOPOROID, invertebrate - invertebrate - Favosites sp. - Cordell genus not determined - Alpena Limestone dolomite - Silurian age - Chippewa Co. - - Devonian age - Charlevoix Co. - 125 mm, 70 mm, siliceous replacement - GSD calcite replacement - GSD Michigan Fossils - Student Worksheets – larger format – page 6 of 6 .
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