Sample 45, Puerto Rican Lignites C (Oligocene to of Puerto Rico)

Where: Puerto Rico (18.4° N, 66.2° W: paleocoordinates 17.5° N, 65.4° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: San Sebastian Formation (Rio Guatemala Group), Oligocene to Oligocene (33.9 - 23.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: claystone

• Clay is lignitic.

Size class: microfossils

Preservation: original sporopollenin

Collection methods: bulk, chemical, mechanical,

Primary reference: A. Graham and D. L. Jarzen. 1969. Studies in neotropical paleobotany. I. The Oligocene communities of Puerto Rico. Annals of the Missouri Botanical Garden 56:308-357 [E. Kowalski/E. Kowalski/E. Kowalski]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32295: authorized by Elizabeth Kowalski, entered by Elizabeth Kowalski on 19.06.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Plantae indet., Catostemma sp., Guarea sp., Tetrorchidium sp., "Fern" indet.
Plantae indet. Haeckel 1866
 Coniferales - Podocarpaceae
Podocarpus sp.
Podocarpus sp. L'Heritier and Persoon 1807 podocarp
Angiospermae
 Mesangiosperms - Arecaceae
"Palmae indet." = Arecaceae
"Palmae indet." = Arecaceae von Berchtold and Presl 1820 palm
 Saxifragales - Hamamelidaceae
Liquidambar sp.
Liquidambar sp. Linnaeus 1753 sweetgum
Dicotyledoneae
 Myrtales - Myrtaceae
Eugenia sp.
Eugenia sp. Linnaeus 1753 myrtle
Angiospermae
 Malpighiales - Euphorbiaceae
Alchornea sp.
Alchornea sp. Swartz 1788 spurge
 Fabales - Fabaceae
Acacia sp.
Acacia sp. Miller 1758 wattle
 Fagales - Juglandaceae
Engelhardia sp.
Engelhardia sp. Blume 1825
Bernoullia
  -
Bernoullia sp.
Bernoullia sp. Heer 1876
Polypodiopsida
  - Polypodiaceae
Polypodiaceae indet.
Polypodiaceae indet. Presl and Presl 1822
 Polypodiales - Polypodiidae
Pteris sp.
Pteris sp. Linnaeus 1753