southern House Range, Fillmore Formation, Section 1 (Ordovician to of the United States)

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 (485.4 - 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

• shale, 44%; (2) wavy-laminated lime mudstone, 21 %; (3) dense lime mudstone, 6%;

•(4) reef lime mudstone, less than 1 %; (5) calcisiltite-calcarenite, 7%; and (6) flat-pebble conglomerate, 21% (trilobite-dominated, 16%).

• shaly siltstone, light gray ledge-forming, and brown slope

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
  -
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Rhynchonellata
 Orthida - Plectorthidae
Gastropoda
 Euomphalina - Macluritidae
Macluritella sp. Kirk 1927 snail
 Murchisoniina - Hormotomidae
Plethospira sp. Ulrich and Scofield 1897 snail
 Murchisoniina - Loxonematidae
? Loxonema sp. Phillips 1841 snail
Cephalopoda
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
Graptolithina
 Dendroidea -
Clonograptus sp. Nicholson 1973 graptolite
 Dendroidea - Dendrograptidae
Dictyonema sp. Hall 1851 graptolite
Demospongea
 Lithistida - Anthaspidellidae
Anthaspidella sp. Ulrich and Everett 1889 demosponge
Calycocoelia sp. Bassler 1927 demosponge
Chlorophyceae
  - Receptaculitidae
Calathium sp. Billings 1865
 Ichnofossils -
Rusophycus sp. Hall 1852
Chondrites sp. von Sternberg 1833