Rough Hollow, Blanco, Archaeoscyphia biostrome (Ordovician of the United States)

Also known as Reef 1822

Where: Blanco County, Texas (30.3° N, 98.3° W: paleocoordinates 21.4° S, 88.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Hintzeia celsaora trilobite zone, Honeycut Formation (Ellenburger Group), Jeffersonian (485.4 - 468.1 Ma)

• lower 1/3 of the formation (G1 zone)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified wackestone

• thin Archaeoscyphia biostromes

Size class: macrofossils

Primary reference: D. F. Toomey and M. H. Nitecki. 1979. Organic buildups in the Lower Ordovician (Canadian) of Texas and Oklahoma. Fieldiana Geology 2:1-181 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80088: authorized by Wolfgang Kiessling, entered by Uta Merkel on 03.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Girvanella
  -
Girvanella sp. Nicholson and Etheridge 1878
Trilobita
 Proetida - Dimeropygidae
Pseudohystricurus sp. Ross 1951 trilobite
 Proetida - Bathyuridae
"Jeffersonia" granosa Cullison 1944 trilobite
Strigigenalis sp. Whittington and Ross 1953 trilobite
Rhynchonellata
 Pentamerida - Syntrophiidae
 Orthida - Finkelnburgiidae
Rostroconchia
 Conocardiida - Eopteriidae
Eopteria sp. Billings 1865
Gastropoda
 Euomphalina - Ophiletidae
"Barnesella lecanospiroides" = Lecanospira lecanospiroides
"Barnesella lecanospiroides" = Lecanospira lecanospiroides Bridge and Cloud 1947 snail
 Euomphalina - Raphistomatidae
 Eogastropoda - Sinuopeidae
Euconia etna Billings 1865 snail
entered as Eopteria etna.
 Murchisoniina - Hormotomidae
Hormotoma sp. Salter 1859 snail
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
 Tarphycerida - Tarphyceratidae
Tarphyceras chadwickense Ulrich et al. 1942
Conodonta
  -
Conodonta indet. Eichenberg 1930 conodont
Demospongea
 Lithistida - Anthaspidellidae
Archaeoscyphia annulata Rigby 1973 demosponge