IK-3. Ikes Canyon sponge beds, Toquima Range (Ordovician of the United States)

Where: Nye County, Nevada (39.1° N, 116.7° W: paleocoordinates 5.4° S, 81.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Orthidiella brachiopod zone, Antelope Valley Formation (Pogonip Group), Rangerian (470.0 - 470.3 Ma)

• Sponge beds occur at the boundary between the Orthidiella and Anomalorthis zones.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

• uppermost slope of a carbonate platform or outer shelf
• wackestone/packstone/mudstone with shale interbeds

Size class: macrofossils

Primary reference: R. S. Bassler. 1927. A new early Ordovician sponge fauna. Journal of the Washington Academy of Sciences 17(15):390-394 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119435: authorized by Wolfgang Kiessling, entered by Uta Merkel on 25.10.2011, edited by Pete Wagner and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• trilobites, brachiopods, gastropods, and echinoderms reported to be present, but not listed
 Rhombifera - Cheirocrinidae
Hadrocystis pauli n. gen. n. sp.3
Hadrocystis pauli n. gen. n. sp.3
 Rhombifera - Pleurocystitidae
Plethoschisma grandis n. gen. n. sp.3, Deltacystis symmetricus n. gen. n. sp.3
Plethoschisma grandis n. gen. n. sp.3 Sprinkle 1974
Deltacystis symmetricus n. gen. n. sp.3 Sprinkle 1974
 Parablastoidea - Blastocystidae
Trilobita
 Phacopida - Pliomeridae
? Pseudomera nevadensis1 Walcott 1884 trilobite
Pseudomera barrandei1 Billings 1865 trilobite
Demospongiae
 Tetractinellida - Archaeoscyphidae
Nevadocoelia grandis n. sp. Bassler 1927 demosponge
Nevadocoelia wistae n. gen. n. sp. Bassler 1927 demosponge
Nevadocoelia traini n. sp. Bassler 1927 demosponge
Hesperocoelia typicalis n. gen. n. sp. Bassler 1927 demosponge
Hesperocoelia undulata n. sp. Bassler 1927 demosponge
 Lithistida - Streptosolenidae
Streptosolen nodosus n. sp.2 Johns 1994 demosponge
Streptosolen occidentalis n. sp. Bassler 1927 demosponge
Lissocoelia ramosa n. gen. n. sp. Bassler 1927 demosponge
Verpaspongia nodosa n. gen. n. sp.2 Johns 1994 demosponge
 Lithistida - Anthaspidellidae
"Nevadocoelia pulchra n. sp." = Archaeoscyphia pulchra Bassler 1927 demosponge
Patellispongia oculata n. gen. n. sp. Bassler 1927 demosponge
Patellispongia minutipora n. sp. Bassler 1927 demosponge
Patellispongia clintoni n. sp. Bassler 1927 demosponge
Anthaspidella traini n. sp. Bassler 1927 demosponge
Anthaspidella clintoni n. sp. Bassler 1927 demosponge
Calycocoelia typicalis n. gen. n. sp. Bassler 1927 demosponge