Byram [Byram Marl] (Oligocene of the United States)

Where: Hinds County, Mississippi (32.2° N, 90.2° W: paleocoordinates 32.5° N, 83.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Byram Marl Formation, Rupelian (33.9 - 28.1 Ma)

• STRATIGRAPHIC RELATIONS: From the Byram Marl, for which lithostratigraphic relationships are not discussed. AGE: Vicksburgian = Rupelian. STRATIGRAPHIC POSITION: From unknown part of the Byram Marl.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified marl

• SPECIFIC LITHOLOGY: Presumably marl. LITHIFICATION: Poorly lithified, assumed on the basis of facies description and observed material from Byram Marl (poorly lithified-unlithified).

Size class: macrofossils

Reposited in the USNM

• COLLECTOR: Unknown. REPOSITORY: USNM.

Primary reference: F. Canu and R. S. Bassler. 1920. North American early Tertiary Bryozoa. Smithsonian Institute Bulletin 106:1-843 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90565: authorized by Austin Hendy, entered by Austin Hendy on 06.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to bryozoa. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature, though includes species-resolution identifications. Nomenclature updated where possible.
Show authors, comments, and common names
unclassified
  -
Diplopholeos lineatum
Gymnolaemata
 Cheilostomata - Mamilloporidae
Fedora pusilla n. sp.
 Cheilostomata - Bryocryptellidae
"Hippodiplosia strangulata" = Reussia, "Hippodiplosia buccata" = Reussia, Porella compacta
"Hippodiplosia strangulata" = Reussia
"Hippodiplosia buccata" = Reussia
 Cheilostomata - Romancheinidae
Perigastrella plana
 Cheilostomata - Lepraliellidae
"Holoporella peristomata n. sp." = Celleporaria
"Holoporella peristomata n. sp." = Celleporaria
 Cheilostomata - Arachnopusiidae
Arachnopusia vicksburgica
 Cheilostomata - Flustridae
? Hincksina ocalensis
? Hincksina ocalensis Canu and Bassler 1920
 Cheilostomata - Lunulitidae
Lunularia (Oligotresium) vicksburgensis
 Cheilostomata - Onychocellidae
Floridina antiqua
 Cheilostomata - Cribrilinidae
Puellina radiata, Gephyrotes spectabilis n. sp.
Puellina radiata
SUBSPECIES: Puellina radiata anaticula
 Cheilostomata - Quadricellariidae
Nellia bifaciata, "Nellia oculata" = Nellia tenella
"Nellia oculata" = Nellia tenella Lamarck 1816
 Cheilostomata - Tubucellariidae
Tubucellaria vicksburgica
 Cheilostomata - Bitectiporidae
Hippoporina lucens
 Cheilostomata - Trypostegidae
Trypostega venusta
Trypostega venusta Norman 1864
 Cheilostomata - Adeonidae
Adeonellopsis galeata n. sp., Adeonellopsis cyclops
 Cheilostomata - Schizoporellidae
Enoplostomella magniporosa n. sp., Enoplostomella synthetica
Stenolaemata
 Cyclostomata - Entalophoridae
Exochoecia rugosa
 Cyclostomata - Mecynoeciidae
Mecynoecia semota
 Cyclostomata - Oncousoeciidae
Oncousoecia quinqueseriata
 Cyclostomata - Diaperoeciidae
Diaperoecia clava n. sp.