Abandoned Ripley County Construction Company Quarry on SE edge of Osgood (Silurian to of the United States)

Also known as Was: Osgood Quarry; Holocystites (H.) alternatus-Triamara ventricosa Assoc., Locality 11 in Paul

Where: Ripley County, Indiana (39.1° N, 85.3° W: paleocoordinates 26.2° S, 53.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Osgood Formation, Telychian to Telychian (438.5 - 430.5 Ma)

• "?Late Llandoverian (C6) to early Wenlockian". Mainly middle part of formation.

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal; shelly/skeletal, argillaceous bindstone and shelly/skeletal grainstone

• generally good preservation of echinoderms noted; holdfasts; biostromes and thickets; localized winnowed units; trilobites and bryozoans fragmented; "This is one of the few Midwest Silurian echinoderm associations which occur in both carbonate and argillaceous carbonate dominated facies. The community appears to have been subject to wave or current action periodically, but not continuously, i.e. was subject to effects from more than just very major storms...most likely BA 4 to outer BA 3."

•SEP environmental call based on given information and knowledge of regional geology

• "Rather similar [environment] to that of the Upper Osgood Shale Holocystitid-Coronoid Association, but with relatively less available hard substrate and greater susceptibility to current action. The lithology ranges between a bryozoan boundstone and skeletal grainstone, with skeletal packstone (marlstone) fabrics being especially common. Small masses (to 18 cm diam.) of micritic, relatively structureless algal limestone occur locally. The surrounding sediment is a calcareous, slightly silty shale with relatively rare skeletal debris (Middle Osgood Shale), an argillaceous limestone (skeletal wackestone: part of the Middle Osgood Limestone and lower Laurel Lst), or fine-grained dolomite, also with only rare skeletal grains (Romeo Mbr)."

Size classes: macrofossils, mesofossils

Reposited in the FMNH

• Abundances given for Osgood Quarry in table 45.42. I have added three trilobite genera mentioned in text but not included in table.

Primary reference: T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 26803: authorized by Michael Foote, entered by Michael Foote on 01.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Eutrophoceras sp.
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
 Tabulata -
Tabulata indet.
Tabulata indet. tabulate coral
 Favositida - Favositidae
Favosites "sp. 1", Favosites "sp. 2"
Favosites "sp. 1" Lamarck 1816 tabulate coral
Favosites "sp. 2" Lamarck 1816 tabulate coral
Heteractinida
 Octactinellida - Astraeospongiidae
Astraeospongium sp.
Astraeospongium sp. Roemer 1860
Sedentaria
 Sabellida - Serpulidae
Spirorbis sp.
Spirorbis sp. Daudin 1800
Cephalopoda
 Orthocerida - Dawsonoceratidae
Dawsonoceras sp.
Dawsonoceras sp. Hyatt 1884
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema sp., Naticonema "sp. 1", Naticonema "sp. 2", Naticonema "sp. 3"
Cyclonema sp. Hall 1852 snail
Naticonema "sp. 1" Perner 1903 snail
Naticonema "sp. 2" Perner 1903 snail
Naticonema "sp. 3" Perner 1903 snail
 Murchisoniina - Loxonematidae
Loxonema sp.
Loxonema sp. Phillips 1841 snail
Bivalvia
 Modiomorphida - Cypricardiniidae
Cypricardinia sp.
Cypricardinia sp. Hall 1860 clam
Chileata
 Dictyonellida - Eichwaldiidae
"Dictyonella sp." = Eodictyonella
"Dictyonella sp." = Eodictyonella Wright 1994
Rhynchonellata
 Spiriferida - Cyrtiidae
Eospirifer radiatus, Hedeina sp., Striispirifer sp.
Eospirifer radiatus Sowerby 1834
Hedeina sp. Boucot 1957
Striispirifer sp. Cooper and Muir-Wood 1951
 Spiriferida - Delthyrididae
Howellella ("") crispa
Howellella ("") crispa Hisinger 1827
 Atrypida - Atrypidae
Plectatrypa sp., Atrypa ("") reticularus
Plectatrypa sp. Schuchert and Cooper 1930
 Atrypida - Atrypinidae
Atrypina sp.
Atrypina sp. Hall and Clarke 1893
 Athyridida - Nucleospiridae
Nucleospira sp.
Nucleospira sp. Hall 1859
 Athyridida - Meristellidae
Whitfieldella cf. nitida, Meristina sp.
Meristina sp. Hall 1867
 Pentamerida - Parastrophinidae
Anastrophia sp.
Anastrophia sp. Hall 1867
 Orthida - Dalmanellidae
Resserella ("") elegantula
 Orthida - Dicoelosiidae
Dicoelosia sp.
Dicoelosia sp. King 1850
 Orthida - Rhipidomellidae
Dalejina ("") hybrida
Dalejina ("") hybrida Sowerby 1839
 Orthida - Hesperorthidae
"? Schizoramma sp." = Schizonema, Hesperorthis sp.
"? Schizoramma sp." = Schizonema
Hesperorthis sp. Schuchert and Cooper 1931
 Orthida - Platystrophiidae
"Platystrophia cf. biforata" = Platystrophia biforatus
"Platystrophia cf. biforata" = Platystrophia biforatus Schlotheim 1820
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus cf. neglectum
 Rhynchonellida - Trigonirhynchiidae
Rhynchotreta cf. americana
 Rhynchonellida - Machaerariidae
Ferganella sp.
Ferganella sp. Nikiforova 1937
Strophomenata
 Orthotetida - Chilidiopsidae
"Coolinia cf. subplana" = Fardenia (Coolinia)
"Coolinia cf. subplana" = Fardenia (Coolinia)
 Strophomenida - Leptestiidae
Leangella sp.
Leangella sp. Opik 1933
 Strophomenida - Leptostrophiidae
Mesoleptostrophia sp.
Mesoleptostrophia sp. Harper and Boucot 1978
 Strophomenida - Rafinesquinidae
Leptaena ("") rhomboidalis
Lophophorata
 Tentaculitida - Cornulitidae
Cornulites sp.
Cornulites sp. Schlotheim 1820
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Trilobita
 Phacopida - Dalmanitidae
Dalmanites sp.
Dalmanites sp. Barrande 1852 trilobite
 Phacopida - Calymenidae
Calymenidae indet.
Calymenidae indet. Milne-Edwards 1840 trilobite
 Phacopida - Encrinuridae
Staurocephalus sp.
Staurocephalus sp. Barrande 1846 trilobite
 Lichida - Lichidae
Arctinurus sp.
Arctinurus sp. Castelnau 1843 trilobite
 Corynexochida - Illaenidae
Illaenus sp., Bumastus sp.
Illaenus sp. Dalman 1827 trilobite
Bumastus sp. Murchison 1839 trilobite
 Corynexochida - Styginidae
Kosovopeltis sp.
Kosovopeltis sp. Snajdr 1958 trilobite
 Rhombifera - Callocystitidae
Callocystites sp. n. sp.
Callocystites sp. n. sp. Hall 1852
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
 Myelodactylida - Myelodactylidae
Myelodactylus sp.
Myelodactylus sp. Hall 1852 Sea lily
 Calceocrinida - Calceocrinidae
Eohalysiocrinus sp. n. sp.
Eohalysiocrinus sp. n. sp. Prokop 1970 Sea lily
 Pisocrinida - Pisocrinidae
Pisocrinus (Pisocrinus) gemmiformis
 Belemnocrinoidea - Zophocrinidae
Zophocrinidae indet.
Zophocrinidae indet. Miller 1892 Sea lily
 Cyathocrinida - Thalamocrinidae
Thalamocrinus sp.
Thalamocrinus sp. Miller and Gurley 1895 Sea lily
 Sagenocrinida - Lecanocrinidae
Lecanocrinus sp.
 Diplobathrida - Rhodocrinitidae
Lyriocrinus sp.
Lyriocrinus sp. Hall 1852 Sea lily
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp.
Eucalyptocrinites sp. Goldfuss 1831 Sea lily
Blastoidea
 Coronata -
Coronata indet.
Coronata indet. Jaekel 1918 blastoid
juvenile
 Coronata - Stephanocrinidae
Stephanocrinus cornetti, Cupulocorona osgoodensis, Cupulocorona gemmiformis
Cupulocorona gemmiformis Hall 1872 blastoid
Rhombifera
 Hemicosmitoida - Caryocrinitidae
Caryocrinites indianensis, Caryocrinites spp.
Caryocrinites spp. Say 1825
spp. nov.
 Sphaeronitida - Holocystitidae
"Holocystites (Megacystites) abnormalis" = Holocystites (Megacystites) abnormis, Holocystites (Holocystites) ovatus, Holocystites (Holocystites) alternatus, Holocystites (Holocystites) scutellatus
"Holocystites (Megacystites) abnormalis" = Holocystites (Megacystites) abnormis Hall 1864
 Sphaeronitida - Aristocystitidae
"Holocystites ventricosus n. sp." = Triamara ventricosa
"Holocystites ventricosus n. sp." = Triamara ventricosa Miller 1879