Elephant Canyon Formation, Moab, Unit 8 (Carboniferous of the United States)

Where: Grand County, Utah (38.5° N, 109.7° W: paleocoordinates 4.0° N, 36.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Elephant Canyon Formation, Gzhelian (303.7 - 298.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; shelly/skeletal, gray, sandy packstone and shelly/skeletal, gray, argillaceous wackestone

• "Carbonate deposition over a submerged delta lobe"
• 8a, Limestone, sandy biosparite: medium to dark gray; very fossiliferous.

•8b, Limestone, argillaceous biomicrite; medium to dark gray; very fossiliferous.

Size class: macrofossils

Preservation: cast, mold/impression, original calcite

Collection methods: surface (float), surface (in situ),

Primary reference: F. M. Terrell. 1972. Lateral facies and paleoecology of Permian Elephant Canyon Formation, Grand County, Utah. Brigham Young University Geology Studies 19(2):3-44 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 39917: authorized by David Bottjer, entered by Matthew Clapham on 12.06.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gastropod(?) and Wilkingia burrows present in 8a and 8b; "flaring spreite structures" present in 8b
Fusulinina
 Fusulinoidea - Schwagerinidae
unclassified
  -
Arthropoda indet. Latreille 1829
Trilobita
 Proetida - Phillipsiidae
? Ameura sp. Weller 1936 trilobite
Ditomopyge sp. trilobite
Bivalvia
 Arcida - Parallelodontidae
Parallelodon sp. Meek and Worthen 1866 clam
 Myalinida - Myalinidae
Myalina "sp. A" de Koninck 1842 clam
Septimyalina sp. Newell 1942 clam
 Pectinida - Limidae
"Limatula" sp. Wood 1839 file clam
 Pectinida - Limipectinidae
? Acanthopecten sp. Girty 1903 scallop
 Pectinida - Pseudomonotidae
? Pseudomonotis sp. von Beyrich 1862 scallop
 Ostreida - Pinnidae
"Pinna" sp. Linnaeus 1758 oyster
Pteronites sp. McCoy 1842 oyster
 Cardiidia - Sanguinolitidae
Wilkingia "sp. A" Wilson 1959 clam
Large sp.
Wilkingia "sp. B" Wilson 1959 clam
Small sp.
 Pholadomyida - Edmondiidae
Edmondia sp. de Koninck 1841 clam
 Trigoniida - Schizodidae
? Schizodus sp. King 1844 clam
Written Schizodon in faunal list; correct elsewhere
Gastropoda
 Euomphalina - Euomphalidae
Euomphalidae sp. de Koninck 1881 snail
 Euomphalina - Anomphalidae
Anomphalidae sp. Wenz 1938 snail
 Bellerophontida - Bellerophontidae
Bellerophontidae sp. M'Coy 1851 snail
Pharkidonotus sp. Girty 1912 snail
 Murchisoniina - Gosseletinidae
Euconospira sp. Ulrich and Scofield 1897 snail
 Murchisoniina - Lophospiridae
? Worthenia sp. de Koninck 1883 snail
 Murchisoniina - Soleniscidae
Ianthinopsis sp. Meek and Worthen 1866 snail
 Murchisoniina - Loxonematidae
Loxonematidae sp. Koken 1889 snail
Stenolaemata
 Fenestrida - Fenestellidae
? Fenestella sp. Lonsdale 1839
 Fenestrida - Polyporidae
 Trepostomida - Stenoporidae
Strophomenata
 Productida - Echinoconchidae
"Juresania nebrascensis" = Parajuresania nebrascensis
"Juresania nebrascensis" = Parajuresania nebrascensis Owen 1852
 Productida - Productellidae
Marginifera sp. Waagen 1884
 Productida - Linoproductidae
"Linoproductus magnispinus" = Linipalus magnispinus Dunbar and Condra 1932
Linoproductus ? planiventralis Hoare 1960
Written Linoproductus planiventralis (?)
Linoproductus prattenianus Norwood and Pratten 1855
 Productida - Anopliidae
 Productida - Rugosochonetidae
"Chonetes granulifer" = Neochonetes granulifer
"Chonetes granulifer" = Neochonetes granulifer Owen 1852
 Orthotetida - Derbyiidae
Derbyia crassa Meek and Hayden 1858
Rhynchonellata
 Athyridida - Athyrididae
Composita ? trilobata
Written Composita trilobata (?)
Composita ? ovata Mather 1915
Written Composita ovata (?)
 Spiriferida - Trigonotretidae
Neospirifer sp. Fredericks 1919
Neospirifer "sp. A" Fredericks 1919
 Spiriferida - Ambocoeliidae
"Ambocoelia ? expansa" = Crurithyris expansa
"Ambocoelia ? expansa" = Crurithyris expansa Dunbar and Condra 1932
Written Ambocoelia expansa (?)