SP126 (Paleocene of the United States)

Where: Harrison County County, Texas (32.4° N, 94.4° W)

• Paleocoordinates: 38.1° N, 67.8° W (Wright 2013)

• coordinate based on political unit

When: Wilcox Group, Late/Upper Paleocene (58.7 - 55.8 Ma)

Environment/lithology: terrestrial; lignite

• According to Nichols and Traverse (1971, Geoscience and Man, 3, 37-48) the East Texas lignites were part of the Mount Pleasant Fluvial System, and mostly represent plant accumulations in oxbows or back-swamp areas, although the seam mined at Darco likely represents a major forested swamp (see pages 39-40 in Nichols and Traverse 1971). No specific palaeoenvironmental data were given for the clay layers. Given this uncertainty, I have used ‘Terrestrial indet.’ for the palaeoenvironment, rather than anything more specific.

Size class: microfossils

Preservation: original sporopollenin

Collection methods: Nichols provided limited/no information on collecting and processing methods.

•

•Repository for slides: Palynological Laboratory, Pennsylvania State University

Primary reference: D. J. Nichols. 1973. North American and European Species of Momipites ("Engelhardtia") and Related Genera. Geoscience and Man 7:103-117 [P. Jardine/P. Jardine]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 219717: authorized by Phillip Jardine, entered by Phillip Jardine on 20.04.2021

Creative Commons license: CC0 (CC0)

Taxonomic list

• Only abundances of Momipites tenuipolus, Momipites triradiatus, and Momipites sp. are included in Nichols 1973, given as a percentage of the Momipites specimens found in the samples. Momipites wodehousei was rare and counted along with Momipites triradiatus.
Show authors, comments, and common names
Angiospermae
 Fagales - Juglandaceae
Momipites sp., Momipites tenuipolus
Momipites sp. Wodehouse 1933
Momipites tenuipolus Anderson 1960
Plicatopollis
  -
"Momipites triradiatus" = Plicatopollis triradiata
"Momipites triradiatus" = Plicatopollis triradiata Nichols 1973