Where: Prince Georges County, Maryland (38.7° N, 76.7° W: paleocoordinates 38.9° N, 73.6° W)
• coordinate stated in text
• hand sample-level geographic resolution
When: Calvert Formation, Miocene (23.0 - 5.3 Ma)
• Basal Calvert formation.
Environment/lithology: marine; lithology not reported
Size class: microfossils
Preservation: original sporopollenin
Collected by L. W. Ward; reposited in the USGS
Primary reference: N. O. Frederiksen. 1984. Stratigraphic, Paleoclimatic, and Paleobiogeographic Significance of Tertiary Sporomorphs from Massachusetts. Geological Survey Professional Paper 1308:1-35 [P. Jardine/H. Morck/H. Morck]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 231834: authorized by Phillip Jardine, entered by Hannah Morck on 19.09.2023
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Angiospermae | |
|
Quercus sp. Linnaeus 1753 oak
Fagus sp. Linnaeus 1753 beech | |
|
Carya sp. Nuttall 1818 hickory
Momipites "spackmanianus complex" Wodehouse 1933
Juglans sp. Linnaeus 1753 walnut | |
|
| |
|
Tilia sp. Linnaeus 1753 linden | |
| Dicotyledoneae | |
|
Ericaceae indet. Jussieu 1789 heather | |
|
Sapotaceae indet. de Jussieu 1789 | |
| Angiospermae | |
|
Ilex sp. Linnaeus 1753 holly | |
|
Nyssa sp. Linnaeus 1753 tupelo | |
|
Liquidambar sp. Linnaeus 1753 sweetgum | |
|
Platanus sp. Linnaeus 1753 plane tree | |
|
Podocarpus sp. L'Heritier and Persoon 1807 podocarp | |
| Pinopsida | |
|
Sciadopitys sp. Siebold and Zuccarini 1842 | |