Where: Utah (39.2° N, 113.4° W: paleocoordinates 7.0° S, 83.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Macerodus dianae conodont zone, Fillmore Formation, Tremadoc to Tremadoc (486.5 - 470.0 Ma)
• 94 m of the formation in trilobite zone G-2 (Hintze 1951), the Macerodus dianae - Acodus deltatus conodont interval of Ethington and Clark (1981), and parts of graptolite zones 1 and 2 ofBraithwaite (1976).
•
•Ibexian in text.
Environment/lithology: reef, buildup or bioherm; shale and mudstone
•(4) reef lime mudstone, less than 1 %; (5) calcisiltite-calcarenite, 7%; and (6) flat-pebble conglomerate, 21% (trilobite-dominated, 16%).
Size classes: macrofossils, mesofossils
Primary reference: B. F. Dattilo. 1993. The Lower Ordovician Fillmore Formation of Western Utah: Storm-dominated Sedimentation on a Passive Margin. Geology Studies 39 [W. Kiessling/M. Krause]more details
PaleoDB collection 154882: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 17.03.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pterobranchia | |
Clonograptus sp. Nicholson 1873 graptolite | |
Dictyonema sp. Hall 1851 graptolite | |
Cephalopoda | |
Nautiloidea indet. Agassiz 1847 nautiloid | |
Gastropoda | |
Macluritella sp. Kirk 1927 snail | |
? Loxonema sp. Phillips 1841 snail | |
Plethospira sp. Ulrich and Scofield 1897 snail | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Rhynchonellata | |
Trilobita | |
Trilobita indet. Walch 1771 trilobite | |
Radiocyatha | |
Calathium sp. Billings 1865 | |
Demospongiae | |
Anthaspidella sp. Ulrich and Everett 1889 demosponge
Calycocoelia sp. Bassler 1927 demosponge | |
Rusophycus sp. Hall 1852
Chondrites sp. von Sternberg 1833 |