Bromide Formation, Pooleville Member Trilobites (Ordovician of the United States)

Where: Oklahoma (34.0° N, 97.0° W: paleocoordinates 22.5° S, 73.8° W)

When: Erismodus quadridactylus conodont zone, Pooleville Member (Bromide Formation), Blackriveran (460.9 - 449.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: limestone and gray, calcareous shale

• Shallow water; tidal flat, lower intertidal. Environments from M. W. Longman. 1982. Depositional environments. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 : 17-29.
• "[M[ainly biomicrite and microspar limestone, interbedded with greenish-gray calcareous shale along the axis of the aulacogen. The type section in the southwestern Arbuckles is 71 m thick, with much greenish-gray calcareous shale, and probably represents an area close to the Pooleville depocenter. In most of the Arbuckle Mountains, the upper 5 m of Pooleville is a massive burrowed micrite or calcilutite of the intertidal facies. In the Criner Hills, the Pooleville is about 40 m thick and is mainly a thin-bedded to medium-bedded mudstone or microspar limestone, deposited along the southern margin of the aulacogen. In the northeastern adn northern Arbuckles, the Pooleville is less than 21 m thick, with some birdseye micrite in the upper part." Lithology from R, O. Fay and A. A. Graffman. 1982. Stratigraphic studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 : 11-16. Edited by J. Sprinkle.

Size class: macrofossils

Primary reference: R. O. Fay and A. A. Graffham. 1982. Biostratigraphic and paleontological studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 30-33 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 23892: authorized by Steven Holland, entered by Tori Hanson on 23.07.2002, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)

Taxonomic list

• After Shaw, 1974; Ludvigsen, 1978.
Trilobita
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Asaphidae
Vogdesia bromidensis Esker 1964 trilobite
 Trinucleida - Raphiophoridae
 Phacopida - Pterygometopidae
Eomonorachus divaricatus Frederickson 1964 trilobite
Calyptaulax annulata Raymond 1905 trilobite
 Phacopida - Cheiruridae
Sphaerocoryphe sp. Angelin 1854 trilobite
Ceraurus ruidus Cooper 1953 trilobite
Pandaspinapyga salsa Esker 1964 trilobite
 Phacopida - Encrinuridae
"Encrinuroides capitonis" = Frencrinuroides capitonis
"Encrinuroides capitonis" = Frencrinuroides capitonis Frederickson 1964 trilobite
 Corynexochida - Illaenidae
Thaleops jaanussoni Amati and Westrop 2004 trilobite
Bumastoides cf. milleri Billings 1859 trilobite
 Corynexochida - Styginidae
"Platillaenus cf. limbatus" = Failleana limbata
"Platillaenus cf. limbatus" = Failleana limbata Raymond 1910 trilobite
 Odontopleurida - Odontopleuridae
Ceratocephala graffhami Shaw 1974 trilobite
Apianurus sp. Whittington 1956 trilobite
 Proetida - Otarionidae
Otarion sp. Zenker 1833 trilobite
 Proetida - Bathyuridae
Bathyurus superbus Raymond 1910 trilobite
 Harpetida - Harpetidae
Dolichoharpes reticulata Whittington 1949 trilobite
 Lichida - Lichidae
Probolichas sp. Phleger 1936 trilobite
Amphilichas subpunctatus Esker 1964 trilobite