Galena Group, Dunleith Fm., Rivoli Mbr. (Ordovician of the United States)

Where: Iowa (42.0° N, 93.5° W: paleocoordinates 19.7° S, 65.2° W)

• coordinate based on political unit

When: Rivoli Member (Dunleith Formation), Trentonian (457.3 - 449.6 Ma)

• "M. Ord., Trentonian"

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; carbonate

• "carbonate. shallow water hardground; scour evident. BA3. cratonic"

Size class: macrofossils

Primary reference: T. J. Palmer and C.D. Palmer. 1977. Faunal distribution and colonization strategy in a Middle Ordovician hardground community. Lethaia 10:179-199 [G. Webster/G. Webster]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 330: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "T.J. Palmer and C.D. Palmer 1977. Faunal distribution and colonization strategy in a M. Ord. hardground community. Lethaia 10:179-199"
Show authors, comments, and common names
unclassified
  -
Podolithus sp.
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
streptelasmatid
Demospongiae
 Streptosclerophorida - Hindiidae
Hindia sp.
Hindia sp. Duncan 1879 demosponge
Edrioasteroidea
  -
Edrioasteroidea indet.
Edrioasteroidea indet. Billings 1858
edrioasteroid
Crinoidea
  -
Lichenocrinus sp.
Lichenocrinus sp. Hall 1866 Sea lily
 Rhombifera - Pleurocystitidae
Pleurocystitidae sp.
Pleurocystitidae sp. Neumayr 1889
originally entered as "Pleurocystitid sp."
Trilobita
 Phacopida - Calymenidae
Calymenidae indet.
Calymenidae indet. Milne-Edwards 1840 trilobite
 Asaphida -
Asaphida indet.
Asaphida indet. Salter 1864 trilobite
asaphacean
 Trinucleida - Trinucleidae
Trinucleidae indet.
Trinucleidae indet. Hawle and Corda 1847 trilobite
Stenolaemata
 Cryptostomata - Escharoporidae
Escharopora sp.
Escharopora sp. Hall 1847
 Cryptostomata - Rhinidictyidae
Stictopora sp., "Astreptodictya sp." = Trigonodictya
Stictopora sp. Hall 1847
"Astreptodictya sp." = Trigonodictya
 Trepostomata - Dittoporidae
Hemiphragma sp.
Hemiphragma sp. Ulrich 1893
3 species
 Trepostomata - Halloporidae
Hallopora sp.
Hallopora sp. Bassler 1911
 Trepostomata - Aisenvergiidae
Eridotrypa sp.
Eridotrypa sp. Ulrich 1893
 Cystoporata - Fistuliporidae
Fistuliporidae indet.
 Cystoporata - Ceramoporidae
Ceramoporidae indet.
 Trepostomida - Monticuliporidae
Prasoporina sp., Prasopora sp., Homotrypella sp.
Prasoporina sp. Bassler 1952
Prasopora sp. Nicholson and Etheridge 1877
Homotrypella sp. Ulrich 1886
Rhynchonellata
 Orthida - Plaesiomyidae
Dinorthis sp.
Dinorthis sp. Hall and Clarke 1892
 Orthida - Platystrophiidae
Platystrophia sp.
 Orthida - Dalmanellidae
Paucicrura sp.
Paucicrura sp. Cooper 1956
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema sp.
Rhynchotrema sp. Hall 1860
 Atrypida - Anazygidae
Zygospira sp.
Zygospira sp. Hall 1862
Strophomenata
 Strophomenida - Sowerbyellidae
Sowerbyella sp.
Sowerbyella sp. Jones 1928
 Strophomenida - Furcitellidae
Oepikina sp.
Oepikina sp. Salmon 1942
Craniata
 Craniida - Craniidae
Philhedra sp.
Philhedra sp. Koken 1889
Lophophorata
 Tentaculitida - Cornulitidae
Cornulites sp.
Cornulites sp. Schlotheim 1820
Gastropoda
 Bellerophontida -
Bellerophontida indet.
Bellerophontida indet. Ulrich and Scofield 1897 snail
bellerophontacean
 Euomphalina - Platyceratidae
Cyclonema sp.
Cyclonema sp. Hall 1852 snail
 Murchisoniina - Lophospiridae
Lophospira sp.
Lophospira sp. Whitfield 1886 snail
 Murchisoniina - Trochonematidae
Trochonema sp.
Trochonema sp. Salter 1859 snail