MNA 1019-2 (Carboniferous to of the United States)

Also known as Cave Canyon

Where: Mojave County, Arizona (36.1° N, 113.9° W: paleocoordinates 0.5° N, 45.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Surprise Canyon Formation, Late/Upper Mississippian to Late/Upper Mississippian (326.4 - 314.6 Ma)

• "unit 6 of measured section, 18 m above base" of formation

•"Upper Mississippian-Lower Pennsylvanian"

• bed-level stratigraphic resolution

Environment/lithology: "channel"; lithified siltstone

• "channels" in "two major streams"
• "a basal fluvial detrital unit in a medium- to fine-grained siltstone that is interbedded with red-brown to dark-gray sandstone and overlies pebble and cobble conglomerates"

Size class: macrofossils

Preservation: adpression

Collected by S. Beus

• Museum of Northern Arizona collection

Primary reference: W. D. Tidwell, J. R. Jennings, and S. S. Beus. 1992. A Carboniferous flora from the Surprise Canyon Formation in the Grand Canyon, Arizona. Journal of Paleontology 66(6):1013-1021 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 92398: authorized by John Alroy, entered by John Alroy on 09.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Polypodiopsida
 Equisetales - Equisetidae