LJH0026b (Cretaceous of the United States)

Where: Wyoming (42.1° N, 110.2° W: paleocoordinates 42.6° N, 65.8° W)

• coordinate stated in text

When: Aspen Shale Formation, Albian (113.0 - 100.5 Ma)

Environment/lithology: terrestrial; massive, tuffaceous siltstone

• paludal setting
• Light yellow-grey siltstone, massive, blocky weathering, tuffaceous. Has parallel and low-angle cross-lamination in the basal 40 cm. A 20-cm bed of light grey, tuffaceous siltstone, with vertical rhizomorphs occurs 0.8 m above the base. The uppermost 20 cm is a tuff with vertical and horizontal rhizomorphs and mats of fern rachises.

Size class: macrofossils

Preservation: adpression

Reposited in the YPM

Primary reference: D. J. Peppe, L. J. Hickey, I. M. Miller and W. A. Green. 2008. A morphotype catalogue, floristic analysis and stratigraphic description of the Aspen Shale flora Cretaceous–Albian) of Southwestern Wyoming. Bulletin of the Peabody Museum of Natural History 49(2):181-208 [S. Wing/N. Jud]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 102758: authorized by Scott Wing, entered by Nathan Jud on 19.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Magnoliopsida
  -
Magnoliopsida indet.
Magnoliopsida indet. Cronquist et al. 1996
two morphotypes
Angiospermae
 Rosales - Rosaceae
Prunus aspensis
 Sapindales - Sapindaceae
Sapindopsis magnifolia
Sapindopsis magnifolia Fontaine 1889 soapberry
Polypodiopsida
  -
Cladophlebis readii
 Schizaeales - Polypodiidae
Anemia fremonti, Baieropsis sp.
Anemia fremonti Knowlton 1917
Baieropsis sp. Fontaine 1889
 Equisetales - Equisetidae
Equisetites sp.
Equisetites sp. Sternberg 1833
Pteridopsida
 Filicales -
Filicales indet.