Where: Iowa (43.0° N, 91.0° W: paleocoordinates 20.3° S, 55.3° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Hopkinton Formation, Telychian (438.5 - 433.4 Ma)
• Principally from the Farmers Creek Member.
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal ramp; dolomitic, shelly/skeletal wackestone
•
•SEP environmental call based on given description and same vol. page 807.
Collection methods: I have combined seven localities (with abundances) in table 50.12, as well as other taxa mentioned in text. Not all higher taxa treated in the same detail as the brachiopods. See Frest et al. (1999--PBDB ref. 4379) for echinoderms.
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 25038: authorized by Michael Foote, entered by Michael Foote on 26.08.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Crinoidea | |
| |
Macrostylocrinus sp. Sea lily | |
Carpocrinus bodei Sea lily | |
Craniata | |
Dinobolus sp. Hall 1871 | |
Strophomenata | |
"Coolinia sp." = Fardenia (Coolinia)
| |
Eoplectodonta sp. Kozlowski 1929 | |
Protomegastrophia sp. Caster 1939 | |
Leptaena rhomboidalis Wahlenberg 1818 | |
Chileata | |
"Dictyonella sp." = Eodictyonella
"Dictyonella sp." = Eodictyonella Wright 1994 | |
Rhynchonellata | |
Pentamerus oblongus de Sowerby 1839 | |
Meristina sp. Hall 1867
Whitfieldella sp. Hall and Clarke 1893 | |
Nucleospira sp. Hall 1859 | |
| |
Ferganella sp. Nikiforova 1937 | |
Orthida indet. Schuchert and Cooper 1932 | |
Linoporella sp. Schuchert and Cooper 1931 | |
Dicoelosia sp. King 1850 | |
Resserella sp. Bancroft 1928
Isorthis sp. Kozlowski 1929 | |
"Platystrophia biforata" = Platystrophia biforatus
"Platystrophia biforata" = Platystrophia biforatus Schlotheim 1820 | |
Stenolaemata | |
| |
Fenestellidae indet. King 1850 | |
Cephalopoda | |
Nautiloidea indet. Agassiz 1847 nautiloid | |
Gastropoda | |
Murchisonioidea indet. Koken 1896 snail | |
Phanerotrema sp. Fischer 1885 snail | |
Platyceras sp. Conrad 1840 snail
Cyclonema sp. Hall 1852 snail | |
Straparollus sp. de Montfort 1810 snail | |
Rostroconchia | |
Rostroconchia indet. Pojeta et al. 1972 | |
Bivalvia | |
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam | |
Trilobita | |
Stenopareia sp. Holm 1886 trilobite | |
Calymenidae indet. Milne-Edwards 1840 trilobite | |
Encrinuridae indet. Angelin 1854 trilobite | |
Arctinurus sp. Castelnau 1843 trilobite | |
Anthozoa | |
| |
Favosites sp. Lamarck 1816 tabulate coral | |
Halysites sp. von Waldheim 1813 tabulate coral | |
unclassified | |
| |
Chlorophyceae | |
|