Stricklandiid community, Hopkinton Fm. (Silurian of the United States)

Where: Dubuque County, Iowa (42.4° N, 90.8° W)

• Paleocoordinates: 26.4° S, 105.8° W (Wright 2013)

• coordinate based on political unit

• basin-level geographic resolution

When: Cycle IV zone, Hopkinton Dolomite Formation, Llandovery (443.4 - 433.4 Ma)

• "Early Sil. C4. Upper Llandovery"

Environment/lithology: offshore shelf; dolomite

• "dolomite, sometimes micritic. quiet, relatively deep water, well below wave base (BA4). Cratonic

Size class: macrofossils

Primary reference: M. E. Johnson. 1980. Paleoecological structure in early Silurian platform seas of the North American midcontinent. Palaeogeography, Palaeoclimatology, Palaeoecology 30:191-215 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 456: authorized by Arnold Miller, entered by Mike Sommers on 10.12.1998, edited by Pete Wagner

Creative Commons license: CC0 (CC0)

Taxonomic list

• "Johnson, 1980"
Show authors, comments, and common names
unclassified
  -
Dinolobus sp.
Algae
 Algae -
Algae indet.
Algae indet.
calcareous green algae
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinitidae indet.
Eucalyptocrinitidae indet. Roemer 1855 Sea lily
originally entered as "Eucalyptocrinitid sp."
 Monobathrida - Patelliocrinidae
Macrostylocrinus sp.
 Diplobathrida - Dimerocrinitidae
Dimerocrinites sp.
Dimerocrinites sp. Phillips 1839 Sea lily
Bryozoa
  -
Bryozoa "indet. Reteporiform", Bryozoa "indet. Flustriform"
Bryozoa "indet. Reteporiform" Ehrenberg 1831
Reteporiform
Bryozoa "indet. Flustriform" Ehrenberg 1831
Flustriform
Rhynchonellata
 Atrypida - Atrypidae
Atrypa sp.
Atrypa sp. Dalman 1828
 Athyridida - Meristellidae
? Whitfieldella sp.
? Whitfieldella sp. Hall and Clarke 1893
originally entered as "? Whitfieldella sp."
 Pentamerida - Stricklandiidae
Stricklandia sp.
Stricklandia sp. Billings 1859
 Orthida - Dalmanellidae
Isorthis sp.
Isorthis sp. Kozlowski 1929
 Orthida - Platystrophiidae
Platystrophia sp.
Strophomenata
 Orthotetida - Chilidiopsidae
? Fardenia sp.
? Fardenia sp. Lamont 1935
originally entered as "? Fardenia sp."
 Strophomenida - Rafinesquinidae
Leptaena sp.
Leptaena sp. Dalman 1828
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema sp.
Cyclonema sp. Hall 1852 snail
 Murchisoniina -
Murchisonioidea indet.
Murchisonioidea indet. Koken 1896 snail
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
rugose coral
 Heliolitida - Halysitidae
Halysites sp.
Halysites sp. von Waldheim 1813 tabulate coral
 Favositida - Favositidae
Favosites sp.
Favosites sp. Lamarck 1816 tabulate coral