Residuary Auburn Chert Beds, east of Auburn (Ordovician of the United States)

Where: Lincoln County, Missouri (39.1° N, 91.0° W: paleocoordinates 23.0° S, 66.2° W)

When: Phragmodus undatus conodont zone, Spechts Ferry Member (Decorah Formation), Turinian (457.3 - 453.8 Ma)

• Auburn Chert Beds. Often given as Plattin Limestone, but the Auburn Chert is an informal name and frequently said to correlate with the Spechts Ferry member of the Decorah.

• group of beds-level stratigraphic resolution

Environment/lithology: cherty/siliceous claystone

Size class: macrofossils

Preservation: original silica

Reposited in the FMNH

Primary reference: E.B. Branson. 1909. The fauna of the residuary Auburn chert of Lincoln County, Missouri. Transactions of the Academy of Science of St. Louis 18(4):39-52 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175724: authorized by Pete Wagner, entered by Pete Wagner on 04.01.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Rhinodictya "sp. indet."
Trilobita
 Asaphida - Asaphidae
Ptychopyge "sp. undet.", Isotelus iowensis
Ptychopyge "sp. undet." Angelin 1854 trilobite
Isotelus iowensis Owen 1852 trilobite
 Proetida - Bathyuridae
"Bathyurus spiniger" = Bathyurus (Raymondites) spiniger
"Bathyurus spiniger" = Bathyurus (Raymondites) spiniger Hall 1847 trilobite
 Corynexochida - Illaenidae
Bumastus trentonensis
Bumastus trentonensis Emmons 1842 trilobite
 Phacopida - Cheiruridae
Ceraurus pleurexanthemus
Ceraurus pleurexanthemus Green 1832 trilobite
 Phacopida - Pterygometopidae
"Pterygometopus intermedius" = Eomonorachus intermedius, "Pterygometopus lincolnensis n. sp." = Sceptaspis lincolnensis
"Pterygometopus intermedius" = Eomonorachus intermedius Walcott 1879 trilobite
"Pterygometopus lincolnensis n. sp." = Sceptaspis lincolnensis Branson 1909 trilobite
Ostracoda
 Palaeocopida - Primitiidae
Primitia "n. sp. 1", Primitia "n. sp. 2"
Primitia "n. sp. 1" Jones and Holl 1923 ostracod
Primitia "n. sp. 2" Jones and Holl 1923 ostracod
Rhynchonellata
 Atrypida - Anazygidae
"Zygospira recurvirostra" = Anazyga recurvirostra
"Zygospira recurvirostra" = Anazyga recurvirostra Hall 1847
 Atrypida - Protozygidae
"Zygospira nicolleti" = Manespira nicolleti
"Zygospira nicolleti" = Manespira nicolleti Winchell and Schuchert 1892
 Orthida - Draboviidae
"Dalmanella subaequata" = Pionodema subaequata
"Dalmanella subaequata" = Pionodema subaequata Conrad 1843
 Orthida - Dalmanellidae
Dalmanella testudinaria
 Orthida - Hesperorthidae
"Orthis tricenaria" = Hesperorthis tricenaria
"Orthis tricenaria" = Hesperorthis tricenaria Conrad 1843
Strophomenata
 Strophomenida - Strophomenidae
Strophomena auburnensis
Lingulata
 Lingulida - Lingulidae
Lingula "sp. indet."
Lingula "sp. indet." Bruguiére 1797
Rostroconchia
 Ribeirioida - Technophoridae
Technophorus bellistriatus n. sp.
Technophorus bellistriatus n. sp. Branson 1909
Gastropoda
 Bellerophontida - Bucaniidae
"Conradella fimbriata" = Phragmolites fimbriata, Bucania halli
"Conradella fimbriata" = Phragmolites fimbriata Ulrich and Scofield 1897 snail
Bucania halli Ulrich and Scofield 1897 snail
 Bellerophontida - Pterothecidae
"Carinaropsis acuta" = Carinaropsis minima, "Carinaropsis phalera" = Carinaropsis cymbula, Pterotheca "sp. undet.", Pterotheca expansa
"Carinaropsis acuta" = Carinaropsis minima Ulrich and Scofield 1897 snail
"Carinaropsis phalera" = Carinaropsis cymbula Hall 1861 snail
Pterotheca "sp. undet." Salter 1853 snail
Pterotheca expansa Emmons 1842 snail
 Bellerophontida - Bellerophontidae
"Bellerophon capax" = Sphenosphaera capax
"Bellerophon capax" = Sphenosphaera capax Ulrich and Scofield 1897 snail
 Euomphalina - Helicotomidae
Helicotoma missouriensis n. sp., Helicotoma tennesseensis
Helicotoma missouriensis n. sp. Branson 1909 snail
Helicotoma tennesseensis Safford 1869 snail
 Euomphalina - Holopeidae
Holopea insignis
Holopea insignis Ulrich and Scofield 1897 snail
 Euomphalina - Platyceratidae
"Strophostylus textilis" = Cyclonema textilis
"Strophostylus textilis" = Cyclonema textilis Miller 1897 snail
 Murchisoniina - Murchisoniidae
"Hormotoma fasciata n. sp." = Cyrtostropha salteri
"Hormotoma fasciata n. sp." = Cyrtostropha salteri Ulrich and Scofield 1897 snail
 Murchisoniina - Hormotomidae
Hormotoma gracilis
Hormotoma gracilis Hall 1847 snail
Hormotoma gracilis sublaxa
 Murchisoniina - Lophospiridae
"Lophospira oweni" = Paupospira oweni, "Lophospira saffordi" = Paupospira oweni, "Lophospira fillmorensis" = Eunema concinnula, Lophospira obliqua, Lophospira perangulata
"Lophospira oweni" = Paupospira oweni Ulrich and Scofield 1897 snail
"Lophospira saffordi" = Paupospira oweni Ulrich and Scofield 1897 snail
"Lophospira fillmorensis" = Eunema concinnula Ulrich and Scofield 1897 snail
Lophospira obliqua Ulrich and Scofield 1897 snail
Lophospira perangulata Hall 1847 snail
 Murchisoniina - Eotomariidae
Eotomaria dryope, Liospira progne, Liospira micula
Eotomaria dryope Billings 1865 snail
Liospira progne Billings 1860 snail
Liospira micula Hall and Whitney 1862 snail
 Murchisoniina - Gosseletinidae
Cataschisma typa n. gen. n. sp., "Hormotoma latiangularis n. sp." = Cataschisma latiangularis
Cataschisma typa n. gen. n. sp. Branson 1909 snail
"Hormotoma latiangularis n. sp." = Cataschisma latiangularis Branson 1909 snail
Cephalopoda
 Orthocerida - Proteoceratidae
"Orthoceras sociale" = Isorthoceras sociale
"Orthoceras sociale" = Isorthoceras sociale Hall in Miller 1877
 Pseudorthocerida - Spyroceratidae
"Orthoceras bilineatum" = Spyroceras bilineatum
"Orthoceras bilineatum" = Spyroceras bilineatum Hall 1847
 Oncocerida -
Cyrtoceras "sp. undet."
 Oncocerida - Oncoceratidae
"Cyrtoceras billingsi" = Laphamoceras scofieldi
"Cyrtoceras billingsi" = Laphamoceras scofieldi Foerste 1932
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites retrorsus
Cyrtolites retrorsus Ulrich and Scofield 1897
 Archinacellida - Archinacellidae
Archinacella "sp. undet.", Archinacella patelliformis
Archinacella "sp. undet." Ulrich and Scofield 1897
 Tryblidiida - Tryblidiidae
Helcionopsis "sp. undet."
Helcionopsis "sp. undet." Ulrich and Scofield 1897
Bivalvia
 Cyrtodontida - Cyrtodontidae
Cyrtodonta "sp. indet.", Cyrtodonta billingsi
Cyrtodonta "sp. indet." Billings 1858 clam
Cyrtodonta billingsi Ulrich 1894 clam
 Pholadomyida -
Sphenolium "sp. undet."
Sphenolium "sp. undet." Miller 1889 clam
 Pholadomyida - Pholadomyidae
Rhytimya "sp. undet."
Rhytimya "sp. undet." Ulrich 1893 clam
 Modiomorphida - Modiomorphidae
Whiteavesia subcarinata, Parallelodus obliquus n. gen. n. sp., "? Psiloconcha "sp. undet."" = Cymatonota, Modiolodon subrhomboideus n. sp., Goniophora carinata, Modiolopsis expansa n. sp., Modiolopsis "sp. undet."
Parallelodus obliquus n. gen. n. sp. Branson 1909 clam
"? Psiloconcha "sp. undet."" = Cymatonota Ulrich 1893 clam
Modiolopsis expansa n. sp. clam
Modiolopsis "sp. undet." Hall 1847 clam
 Solemyida - Ctenodontidae
Ctenodonta costata n. sp., Ctenodonta medialis, Ctenodonta oviformis, Ctenodonta auburnensis n. sp., Ctenodonta nasuta
Ctenodonta costata n. sp. clam
Ctenodonta auburnensis n. sp. Branson 1909 clam
Ctenodonta nasuta Hall 1847 clam
Demospongiae
 Streptosclerophorida - Hindiidae
Hindia ? parva
Hindia ? parva demosponge
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma ? corniculum
Streptelasma ? corniculum Hall 1847 horn coral
 Lichenariida - Lichenariidae
Lichenaria ? typa
Lichenaria ? typa Winchell and Schuchert 1895 tabulate coral