Sponge Gully Locality (Cambrian of the United States)

Also known as [See Collection #77206]

Where: Millard County, Utah (39.3° N, 113.3° W: paleocoordinates 4.3° S, 91.8° W)

• coordinate stated in text

When: Bolaspidella trilobite zone, Marjum Formation, Middle Cambrian (513.0 - 501.0 Ma)

• See Collection #77206

Environment/lithology: slope; fine-grained, gray mudstone and coarse-grained mudstone

• Rocks are inferred to represent deposition in a warm water environment on a gently sloping ramp below storm wave base.
• Specimens occur in thin (~1 cm) fine-grained dark gray mudstone beds that oscillate with thinner, more coarse-grained layers that weather to a reddish color.

Size class: macrofossils

Preservation: trace, soft parts

Collection methods: University of Utah (UU) specimens

Primary reference: P. Cartwright, S. Halgedahl, J. Hendricks, R. Jarrard, A. Marques, A. Collins, and B. Lieberman. 2007. Exceptionally Preserved Jellyfishes from the Middle Cambrian. PLoS One 2(10):e1121 [P. Wagner/S. Tweedt]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96868: authorized by Pete Wagner, entered by Sarah Tweedt on 06.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Hydrozoa
  -
Cubozoa
  -
? Cubozoa indet. box jellyfish
Scyphozoa
 Coronatida -
 Semaeostomatida -
"? Semaeostomatida indet." = Semaeostomeae
"? Semaeostomatida indet." = Semaeostomeae Agassiz 1862 jellyfish