Racine Fm, SE Wisconsin, Horlick Quarry - Patzkowsky (Silurian to of the United States)

Where: Wisconsin (42.7° N, 87.8° W: paleocoordinates 25.4° S, 49.4° W)

• coordinate based on nearby landmark

When: Racine Formation, Wenlock to Wenlock (433.4 - 427.4 Ma)

Environment/lithology: reef, buildup or bioherm; lithified wackestone

• The major features of reefs in the Racine Formation include mound-like shapes, massive appearance, abundant fossils, and inclined flank beds. Carbonate mud and smaller bioclasts within reef deposits have been altered to a mosaic of dolomite crystals. At Horlick Quarry, limited remnants of a reef core facies consist of massive wackestone.

Size class: macrofossils

Primary reference: R. Watkins. 1993. The Silurian (Wenlockian) reef fauna of Southeastern Wisconsin. Palaios 8:325-338 [M. Patzkowsky/Z. Krug]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 13069: authorized by Mark Patzkowsky, entered by Zack Krug on 18.01.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Corynexochida - Styginidae
 Corynexochida - Illaenidae
Bumastus ioxus Hall 1868 trilobite
 Phacopida - Cheiruridae
Cheirurus niagarensis Hall 1868 trilobite
Sphaerexochus romingeri Hall 1868 trilobite
 Lichida - Lichidae
"Trochurus nasuta" = Trochurus nasutus Weller 1907 trilobite
Arctinurus sp. Castelnau 1843 trilobite
Dicranopeltis sp. Hawle and Corda 1847 trilobite
Strophomenata
 Orthotetida - Chilidiopsidae
"Coolinia subplana" = Fardenia (Coolinia)
"Coolinia subplana" = Fardenia (Coolinia)
 Strophomenida - Sowerbyellidae
Plectodonta sp. Kozlowski 1929
 Strophomenida - Rafinesquinidae
"Leptaena depressa" = Leptaena (Leptaena) depressa
"Leptaena depressa" = Leptaena (Leptaena) depressa Sowerby 1824
 Strophomenida - Strophodontidae
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda Hall 1852
Chileata
 Dictyonellida - Eichwaldiidae
Rhynchonellata
 Athyridida - Meristellidae
Whitfieldella sp. Hall and Clarke 1893
Meristina sp. Hall 1867
 Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
 Spiriferida - Cyrtiidae
Striispirifer sp. Cooper and Muir-Wood 1951
Eospirifer radiatus Sowerby 1834
 Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
 Pentamerida - Parastrophinidae
 Pentamerida - Pentameridae
"Apopentamerus racinensis" = Harpidium (Isovella)
"Apopentamerus racinensis" = Harpidium (Isovella)
 Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
 Atrypida - Atrypidae
Plectatrypa sp. Schuchert and Cooper 1930
Atrypa sp. Dalman 1828
 Atrypida - Punctatrypidae
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus sp. Foerste 1909
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia sp. Cooper and Muir-Wood 1951
 Orthida - Rhipidomellidae
Dalejina sp. Havlicek 1953
 Orthida - Dalmanellidae
Resserella canalis Sowerby 1839
 Orthida - Hesperorthidae
Dolerorthis sp. Schuchert and Cooper 1931
 Orthida - Platystrophiidae
Craniata
 Trimerellida - Trimerellidae
Bivalvia
 Autobranchia - Palaeocardiidae
 Cyrtodontida - Cyrtodontidae
 Myalinida - Ambonychiidae
Mytilarca acutirostra Hall 1865 clam
Amphicoelia leidyi Hall 1865 clam
 Ostreida - Pterineidae
 Ostreida - Rhombopteriidae
Rhombopteria sp. Jackson 1890 oyster
 Carditida - Cardiniidae
 Modiomorphida - Modiomorphidae
Modiomorpha indet. Hall and Whitfield 1869 clam
[entered as Modiomorphida indet.]
Gastropoda
  -
 Euomphalina - Holopeidae
Holopea guelphensis Billings 1865 snail
 Euomphalina - Platyceratidae
"Cyclonema elevata" = Strophostylus elevatus, Platyceras sp.
"Cyclonema elevata" = Strophostylus elevatus Hall 1868 snail
Platyceras sp. Conrad 1840 snail
 Euomphalina - Oriostomatidae
"Cyclonema pauper" = Oriostoma pauper
"Cyclonema pauper" = Oriostoma pauper Hall 1867 snail
 Bellerophontida - Bucaniidae
"Tremanotus alpheus" = Tremanotus angustata
"Tremanotus alpheus" = Tremanotus angustata Hall 1852 snail
 Murchisoniina - Phanerotrematidae
"Pleurotomaria occidens" = Phanerotrema occidens
"Pleurotomaria occidens" = Phanerotrema occidens Hall 1867 snail
 Murchisoniina - Murchisoniidae
Murchisonia laphami Hall 1860 snail
Murchisonia conradi Hall 1868 snail
 Murchisoniina - Subulitidae
Fusispira ventricosa Hall 1872 snail
Cephalopoda
 Orthocerida -
 Orthocerida - Kionoceratidae
 Orthocerida - Dawsonoceratidae
 Orthocerida -
 Orthocerida - Orthoceratidae
Michelinoceras sp. Foerste 1932
 Orthocerida - Geisonoceratidae
 Orthocerida - Sphaerorthoceratidae
Plagiostomoceras sp. Teichert and Glenister 1952
 Discosorida - Phragmoceratidae
 Barrandeocerida - Lechritrochoceratidae
 Actinocerida - Armenoceratidae
 Oncocerida - Oncoceratidae
 Oncocerida - Acleistoceratidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
fenestrate
Bryozoa sp. 3 Ehrenberg 1831
ramose
Bryozoa indet. Ehrenberg 1831
laminar
Osteichthyes
 Dipnoi - Phaneropleuridae
Rhombifera
 Glyptocystitoida - Callocystitidae
Coronoidea
 Coronata - Stephanocrinidae
Eocrinoidea
  -
 Rhombifera - Caryocrinitidae
Crinoidea
 Sagenocrinida - Lecanocrinidae
 Cyathocrinida - Cyathocrinitidae
 Cyathocrinida - Crotalocrinitidae
 Monobathrida -
 Monobathrida - Marsupiocrinidae
 Monobathrida - Eucalyptocrinitidae
 Monobathrida -
 Diplobathrida -
 Diplobathrida - Dimerocrinitidae
 Diplobathrida -
Diploporita
 Glyptosphaeritidacea - Gomphocystitidae
 Sphaeronitida - Holocystitidae
"Holocystites abnormis" = Holocystites (Megacystites) abnormis, "Holocystites alternatus" = Holocystites (Holocystites) alternatus
"Holocystites abnormis" = Holocystites (Megacystites) abnormis Hall 1864
"Holocystites alternatus" = Holocystites (Holocystites) alternatus Hall 1861
Anthozoa
 Rugosa -
Rugosa sp. 1 horn coral
solitary
Rugosa sp. 2 horn coral
solitary
Rugosa sp. 3 horn coral
solitary
Rugosa sp. 4 horn coral
solitary
Rugosa sp. 5 horn coral
solitary
Rugosa sp. 6 horn coral
solitary
Rugosa sp. 7 horn coral
solitary
Rugosa sp. 8 horn coral
solitary
Rugosa sp. 9 horn coral
colonian
Rugosa sp. 12 horn coral
colonian
Rugosa sp. 13 horn coral
colonian