Silurian Reef Fossils
Image slideshow
Brachiopoda - Rhynchonellata - Pentamerida Kirkidium laqueatum Previously (Conchidium laqueatum)Specimen UC 12329 Paleozoic - Silurian -Niagaran (~420 million years ago) Delphi, Indiana
(c) Unspecified
Brachiopoda - Rhynchonellata - Pentamerida Pentamerus oblongusSpecimen UC 13212 Paleozoic - Silurian - Niagaran(~420 million years ago) Northern Indiana?
(c) Unspecified
Arthropoda - Trilobita - Phacopida Calymene celebraSpecimen PE 39218 Racine Formation Paleozoic - Silurian Milwaukee, Wisconsin
(c) Unspecified
Arthropoda - Trilobita - Phacopida Calymene celebraSpecimen PE 39218 Racine Formation Paleozoic - Silurian Milwaukee, Wisconsin
(c) Unspecified
Arthropoda - Trilobita - Phacopida Phacops handwerkiSpecimen PE 10xx9 Racine Formation Paleozoic - Silurian -Niagaran Lemont, Illinois
(c) Unspecified
Echinodermata - Rhombifera - Caryocrinites indianensisSpecimen UC 6028 Paleozoic - Silurian - Niagaran Jefferson County, Indiana
(c) Unspecified
Echinodermata - Diploporita - Holocystites alternatusSpecimen UC 18061 Osgood Formation ?? Paleozoic - Silurian - Niagaran Jefferson County, Indiana
(c) Unspecified
Mollusca - Gastropoda - Euomphalina Poleumita? discoideaSpecimen UC 2879 (holotype) Guelph Formation Paleozoic - Silurian Thornton, Illinois
(c) Unspecified
Mollusca - Gastropoda - Euomphalina - Platyceratidae Platyceras niagarensisSpecimen UC 4655 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
Mollusca - Gastropoda - Euomphalina - Euomphalidae Straparollus magnusSpecimen UC 18104 (holotype) Guelph Formation Paleozoic - Silurian Hawthorne, Illinois
(c) Unspecified
Echinodermata - Crinoidea - Diplobathrida Lampterocrinus? sp.Specimen P 8866 Racine Formation? Paleozoic - Silurian - Niagaran(~420 million years ago) Romeo, Illinois
(c) Unspecified
Mollusca - Gastropoda - Euomphalina - Euomphalidae Euomphalus sp.Specimen PE 2924 Racine Foramtion? Paleozoic - Silurian - Niagaran Chicago?, Illinois
(c) Unspecified
Mollusca - Gastropoda - Euomphalina - Euomphalidae Poleumita sp.Specimen PE 4336 Racine - Port Byron formations Paleozoic - Silurian - Niagaran Thornton, Illinois
(c) Unspecified
Mollusca - Cephalopoda - Nautiloidea Kionoceras cancellatumSpecimen UC 18124 Port Byron Formation Paleozoic - Silurian - Niagaran Bridgeport, Illinois
(c) Unspecified
Mollusca - Bivalvia - Amphicoelia neglectaSpecimen UC 21873 Racine Formation? Paleozoic - Silurian - Niagaran Bridgeport, Illinois
(c) Unspecified
Mollusca - Bivalvia - Amphicoelia neglectaSpecimen UC 21873 Racine Formation? Paleozoic - Silurian - Niagaran Bridgeport, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Favositida - Favositidae Favosites hisingeriSpecimen P 478 Racine Formation? Paleozoic - Silurian - Niagaran Hawthorne, Illinois
(c) Unspecified
Brachiopoda - Strophomenata - Orthotetida - Chilidiopsidae Coolinia subplanaPreviously named: Orthothetes subplanusSpecimen P 5097 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
Brachiopoda - Rhynchonellata - Pentamerida - Pentameridae Kirkidium knightiPreviously identified as Conchidium sp.Specimen P 16393 Racine Formation? Paleozoic - Silurian - Niagaran Thornton, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae Diplophyllum caespitosum Previously Diphyphyllum caespitosumSpecimen P 459 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Favositida - Favositidae Favosites hisingeriSpecimen P 478 Racine Formation? Paleozoic - Silurian - Niagaran Hawthorne, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Favositida - Favositidae Favosites niagarensisSpecimen P 5049 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Heliolitida - Halysitidae Halysites catenulariusSpecimen P 8596 Racine Formation? Paleozoic - Silurian - Niagaran Bellwood, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae Diplophyllum caespitosum Previously Diphyphyllum caespitosumSpecimen P 21106 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
Mollusca - Cephalopoda - Orthocerida - Dawsonoceratidae Dawsonoceras annulatumSpecimen P 754 Racine Formation Paleozoic - Silurian - Niagaran Chicgao, Illinois
(c) Unspecified
Bryozoa - Stenolaemata - Fenestrata Ptiloporella sp.Specimen PE 412 Racine Formation - Port Byron formations Paleozoic - Silurian - Niagaran Thornton, Illinois
(c) Unspecified
Cnidaria - Anthozoa - Favositida - Pachyporidae Coenites reticulata Previously Cladopora reticulata Specimen UC 2783 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
(c) Unspecified
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