Pipe Creek Jr. Reef, Pipe Creek Jr. quarry, Grant County (Silurian of the United States)

Also known as Reef 1431

Where: Grant County, Indiana (40.4° N, 85.8° W: paleocoordinates 28.8° S, 48.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Pipe Creek Jr. Reef Member (Wabash Formation), Ludfordian (425.6 - 423.0 Ma)

• time subdivision given as Niagaran-Cayugan, or Wenlock-upper Ludlow. PJW: Was Silurian; however, Pipe Creek Jr. Reef is a subdivision of the Wabash formation. Simo & Lehman (2000: J. Sedimentary Research 70(4):937-951) place it as it middle Ludlow; as the Wabash is thought to go from Ludfordian - Pridoli, I have it as Ludfordian.

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; shelly/skeletal, gray, argillaceous grainstone and packstone

• fossils were collected from the flank beds of the reef; five lithologies were recognized: limestone, swirly limestone, dolomite and dolomitic limestone, silty mudstone, and interreef siltstone. 97% of the beds in the measured sections were limestone or swirly limestone. limestone described as white to gray, coarse-grained, and highly fossiliferous. swirly limestone described as argillaceous, characterized by milky while sparry calcite mixed with stringers and blobs of green silt to clay sized particles, medium to coarse-grained gray limestone and echinodermal debris

Size class: macrofossils

Collection methods: surface (in situ), chemical, peel or thin section,

• while not explicitly stated, it appears that fossils reported are those collected during field work in the quarry, not from state survey drill cores that were studied; fossils were collected in situ whenever possible, but the majority came from rock blasted from the SNW end of the quarry. This work was completed about one year after the quarry opened for business

Primary reference: D. M. Suchomel. 1975. Paleoecology and Petrology of Pipe Creek Jr. Reef (Niagaran-Cayugan), Grant County, Indiana. unpublished M.A. thesis, Indiana University 1-38 [A. Miller/K. Layou]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 6706: authorized by Arnold Miller, entered by Karen Layou on 10.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

? Renalcis sp. Vologdin
 Corynexochida - Illaenidae
Bumastus sp. Murchison 1839 trilobite
 Phacopida - Encrinuridae
Encrinurus sp. Emmrich 1844 trilobite
 Phacopida - Cheiruridae
Sphaerexochus sp. Beyrich 1845 trilobite
Sphaerexochus romingeri Hall 1868 trilobite
 Proetida - Proetidae
Proetus sp. Steininger 1831 trilobite
Ostracoda indet. Latreille 1802 ostracod
Brachiopoda indet. Cuvier 1805
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Leptaena rhomboidalis Wahlenberg 1818
 Athyridida - Nucleospiridae
 Spiriferida -
Spiriferida indet. Waagen 1883
 Pentamerida -
Pentamerida indet. Schuchert and Cooper 1931
 Pentamerida - Gypidulidae
 Pentamerida - Stricklandiidae
? Stricklandia sp. Billings 1859
 Pentamerida - Subrianidae
 Pentamerida - Pentameridae
Rhipidium sp. Schuchert and Cooper 1931
? Pentamerus sp. Sowerby 1813
 Atrypida - Atrypidae
 Rhynchonellida - Trigonirhynchiidae
"Wilsonia saffordi" = Wilsoniella saffordi
"Wilsonia saffordi" = Wilsoniella saffordi Hall 1860
 Rhynchonellida - Rhynchotrematidae
Rhynchotrematidae indet. Schuchert 1913
 Orthida -
Orthida indet. Schuchert and Cooper 1932
 Orthida - Schizophoriidae
 Orthida - Dicoelosiidae
Dicoelosia sp. King 1850
 Orthida - Orthidae
 Trimerellida - Trimerellidae
? Dinobolus sp. Hall 1871
Annelida indet. Lamarck 1809
 Euomphalina - Euomphalidae
Poleumita sp. Clarke and Ruedemann 1903 snail
Poleumita scamnata Clarke and Ruedemann 1903 snail
 Euomphalina - Platyceratidae
"Platyceras niagarense" = Platyceras niagarensis, "Platyceras cf. cornutum" = Platyostoma cornutum, "? Cyclonemina sp." = Cyclonema
"Platyceras niagarense" = Platyceras niagarensis Hall 1852 snail
"Platyceras cf. cornutum" = Platyostoma cornutum Hisinger 1837 snail
"? Cyclonemina sp." = Cyclonema Hall 1852 snail
 Bellerophontida - Bucaniidae
Tremanotus sp. Hall 1868 snail
 Murchisoniina - Gosseletinidae
Mourlonia sp. de Koninck 1883 snail
 Orthocerida - Kionoceratidae
 Discosorida - Phragmoceratidae
 Oncocerida - Hemiphragmoceratidae
 Fenestrida - Fenestellidae
Fenestella sp. Lonsdale 1839
 Cryptostomida -
Rhinidictya sp. Ulrich 1882
 Cystoporata - Ceramoporidae
Echinoidea indet. Leske 1778 sea urchin
echinoid spines
 Inadunata -
 Pisocrinida - Pisocrinidae
"Parapisocrinus quinquelobus" = Parapisocrinus quinquelobus, "Pisocrinus gorbyi" = Parapisocrinus quinquelobus, Pisocrinus cf. benedicti
"Parapisocrinus quinquelobus" = Parapisocrinus quinquelobus Ausich and Copper 2010 Sea lily
"Pisocrinus gorbyi" = Parapisocrinus quinquelobus Ausich and Copper 2010 Sea lily
 Flexibilia -
Flexibilia indet. Sea lily
 Cyathocrinida - Cyathocrinitidae
Gissocrinus sp. Angelin 1878 Sea lily
 Cyathocrinida - Crotalocrinitidae
Crotalocrinites sp. Austin 1842 Sea lily
 Camerata -
Camerata indet. Wachsmuth and Springer 1885 Sea lily
 Stromatoporida - Stromatoporidae
 Actinostromatida - Actinostromatidae
Actinostroma sp. Nicholson 1886
 Amphiporida - Amphiporidae
Amphipora sp. Schulz 1883
 Clathrodictyida - Clathrodictyidae
Clathrodictyon sp. Nicholson and Murie 1878
 Clathrodictyida - Atelodictyidae
Atelodictyon sp. Lecompte 1951
 Clathrodictyida - Actinodictyidae
 Octactinellida - Astraeospongiidae
"? Astraeospongia sp." = Astraeospongium
"? Astraeospongia sp." = Astraeospongium Roemer 1860
 Tabulata -
Tabulata indet. tabulate coral
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
Favosites forbesi tabulate coral
F. forbesi and F. forbesi occidentalis
Favosites niagarensis tabulate coral
Favosites cf. hispidus tabulate coral
Favosites hisingeri Milne-Edwards and Haime 1851 tabulate coral
Favosites favosus Goldfuss 1826 tabulate coral
 Favositida - Theciidae
Thecia sp. Milne-Edwards and Haime 1849 tabulate coral
Thecia cf. minor tabulate coral
Romingerella cf. major Rominger 1876 tabulate coral
 Favositida - Alveolitidae
Alveolites sp. Lamarck 1801 tabulate coral
 Favositida - Coenitidae
Coenites sp. Eichwald 1829 tabulate coral
Coenites brownsportensis tabulate coral
Coenites cf. cryptodens tabulate coral
Coenites rectilineatus tabulate coral
 Heliolitida - Halysitidae
Cystihalysites sp. Chernyshev 1941 tabulate coral
Cystihalysites magnituba tabulate coral
Halysites sp. von Waldheim 1813 tabulate coral
Halysites microporus tabulate coral
Halysites catenularia Linnaeus 1767 tabulate coral
 Heliolitida - Plasmoporidae
Plasmopora follis tabulate coral
 Heliolitida - Stelliporellidae
Stelliporella sp. Wentzel 1895 tabulate coral
 Heliolitida - Heliolitidae
Heliolites sp. Dana 1846 tabulate coral
Heliolites megastoma tabulate coral
 Rugosa -
Rugosa indet. horn coral
unidentifiable compound Rugosa and unidentifiable Rugosa
 Cystiphyllida - Tryplasmatidae
Tryplasma sp. Lonsdale 1845 horn coral
Tryplasma parva horn coral
 Cystiphyllida - Cystiphyllidae
Cystiphyllum sp. Lonsdale 1839 horn coral
Microplasma sp. Dybowski 1873 horn coral
 Stauriida - Ptenophyllidae
Ptenophyllidae indet. Wedekind 1923 horn coral
 Stauriida - Amplexidae
Amplexus sp. Sowerby 1814 horn coral
 Stauriida - Streptelasmatidae
Streptelasma sp. Hall 1847 horn coral
Enterolasma sp. Simpson 1900 horn coral
 Stauriida - Mucophyllidae
Mucophyllum sp. Etheridge 1894 horn coral
 Stauriida - Kodonophyllidae
 Stauriida - Cyathophyllidae
? Cyathophyllum sp. Goldfuss 1826 horn coral
 Conulariida - Conulariidae
Conularia sp. jellyfish