Where: Iowa (42.0° N, 91.0° W: paleocoordinates 23.1° S, 53.5° W)
• coordinate based on political unit
• basin-level geographic resolution
When: Scotch Grove Formation, Wenlock (433.4 - 427.4 Ma)
• Apparently restricted in Iowa to units of mid-Wenlockian age. Waubeek and upper Buck Creek Quarry Members of the upper Scotch Grove Formation.
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal ramp; dolomitic, shelly/skeletal wackestone and dolomitic, shelly/skeletal lime mudstone
•
•SEP environmental call based on given description and same vol. page 807.
Collection methods: See Frest et al. (1999--PBDB ref. 4379) for echinoderms of Dimerocrinites-Hedeina Community. I have combined two lists with abundances in table 50.6, as well as additional taxa mentioned in text.
Primary reference: B. J. Witzke and M. E. Johnson. 1999. Silurian brachiopod and related benthic communities from carbonate platform and mound environments of Iowa and surrounding areas. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 806-840 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 25019: authorized by Michael Foote, entered by Michael Foote on 26.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Anthozoa | |
Tabulata indet. tabulate coral | |
Halysites sp. von Waldheim 1813 tabulate coral | |
Heliolites sp. Dana 1846 tabulate coral | |
Syringopora sp. Goldfuss 1826 tabulate coral | |
Alveolitidae indet. Duncan 1872 tabulate coral | |
Favositidae indet. Dana 1846 tabulate coral | |
| |
Streptelasmatidae indet. Nicholson 1889 horn coral | |
Arachnophyllum sp. Dana 1846 horn coral | |
Porpites sp. Schlotheim 1820 horn coral | |
Cystiphyllidae indet. Milne-Edwards and Haime 1850 horn coral | |
Trilobita | |
Trilobita indet. Walch 1771 trilobite | |
Dalmanites sp. Barrande 1852 trilobite | |
Cheiruridae indet. Hawle and Corda 1847 trilobite
Cheirurus sp. Beyrich 1845 trilobite | |
Encrinuridae indet. Angelin 1854 trilobite
Encrinurus sp. Emmrich 1844 trilobite | |
Calymene sp. Brongniart 1822 trilobite | |
Illaenidae indet. Hawle and Corda 1847 trilobite
Bumastus sp. Murchison 1839 trilobite | |
Proetus sp. Steininger 1831 trilobite | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Craniata | |
Craniidae indet. Menke 1828 | |
Strophomenata | |
Eoplectodonta sp. Kozlowski 1929 | |
Stropheodontidae indet. Caster 1939 | |
Pentlandina sp. Bancroft 1949 | |
| |
"Leptaenidae indet." = Leptaeninae Hall and Clarke 1894
Leptaena sp. Dalman 1828 | |
Streptis sp. Davidson 1881 | |
"Coolinia sp." = Fardenia (Coolinia)
| |
Chileata | |
"Dictyonella sp." = Eodictyonella
"Dictyonella sp." = Eodictyonella Wright 1994 | |
Rhynchonellata | |
Spiriferida indet. Waagen 1883 | |
Hedeina sp. Boucot 1957
Cyrtia sp. Dalman 1828 | |
"Cyrtiacea indet." = Cyrtioidea
"Cyrtiacea indet." = Cyrtioidea Frederiks 1924 | |
? Delthyris sp. Dalman 1828 | |
? Coelospira sp. Hall 1863 | |
Whitfieldella sp. Hall and Clarke 1893
Meristina sp. Hall 1867 | |
Rhynchonellida indet. Kuhn 1949 | |
Ferganella sp. Nikiforova 1937 | |
Rhynchotreta sp. Hall 1879 | |
Gypidulidae indet. Schuchert and Le Vene 1929 | |
Camerella sp. Billings 1859 | |
| |
Dalejina spp. Havlicek 1953 | |
Atrypa sp. Dalman 1828
Plectatrypa sp. Schuchert and Cooper 1930 | |
Stenolaemata | |
| |
Fenestellidae indet. King 1850 | |
| |
Bivalvia | |
? Actinopteria sp. Hall 1884 oyster | |
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam | |
Gastropoda | |
Gastropoda indet. Cuvier 1795 snail | |
Platyostoma sp. Conrad 1842 snail
Platyceras sp. Conrad 1840 snail | |
Oriostoma sp. Munier-Chalmas 1876 snail | |
? Poleumita sp. Clarke and Ruedemann 1903 snail | |
Raphistomina sp. Ulrich and Scofield 1897 snail | |
? Phanerotrema sp. Fischer 1885 snail | |
Cephalopoda | |
Dawsonoceras sp. Hyatt 1884 | |
Hallicystis sp. Jaekel 1899 | |
Crinoidea | |
Crinoidea indet. Miller 1821 Sea lily | |
Pisocrinus sp. de Koninck 1858 Sea lily | |
Myelodactylus sp. Hall 1852 Sea lily | |
Platycrinitacea indet. Austin and Austin 1843 Sea lily | |
? Lyonicrinus sp. Springer 1926 Sea lily | |
Eucalyptocrinites sp. Goldfuss 1831 Sea lily | |
Marsupiocrinidae indet. Bronn 1855 Sea lily
Manticrinus sp. Ausich 1986 Sea lily | |
? Carpocrinus sp. Muller 1840 Sea lily | |
Dimerocrinites (Dimerocrinites) sp. Phillips 1839 Sea lily | |
Blastoidea | |
Lysocystites sp. blastoid |