Sample 3, Puerto Rican Lignites: Oligocene - Late Oligocene, Puerto Rico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
||||||||||
|
Plantae indet. microspore
Haeckel 1866
|
4.5 %-specimens | |||||||||
|
Angiospermae
- Malpighiales
- Euphorbiaceae
|
||||||||||
|
Alchornea sp. microspore
Swartz 1788
|
.5 %-specimens | |||||||||
|
Angiospermae
- Malpighiales
- Rhizophoraceae
|
||||||||||
|
Rhizophora sp. microspore
Linnaeus 1753
|
89 %-specimens | |||||||||
|
unclassified
|
||||||||||
|
informal Fern indet. microspore
|
2 %-specimens | |||||||||
| trilete fern spore. | ||||||||||
|
Angiospermae
- Fagales
- Juglandaceae
|
||||||||||
|
Engelhardia sp. microspore
Blume 1825
|
1.5 %-specimens | |||||||||
|
Angiospermae
- Fagales
- Fagaceae
|
||||||||||
|
Fagus sp. microspore
Linnaeus 1753
|
1 %-specimens | |||||||||
|
Angiospermae
- Cornales
- Nyssaceae
|
||||||||||
|
Nyssa sp. microspore
Linnaeus 1753
|
.5 %-specimens | |||||||||
|
Angiospermae
- Arecaceae
|
||||||||||
|
Palmae indet. microspore
de Jussieu
|
1 %-specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | Puerto Rico |
| Coordinates: | 18.3° North, 66.9° West (view map) |
| Paleocoordinates: | 19.3° North, 61.1° West (Wright 2013) |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| 10 m.y. bin: | Cenozoic 4 | ||
| *Period: | Middle Tertiary | *Epoch: | Middle Oligocene - Late/Upper Oligocene |
| Key time interval: | Oligocene - Late Oligocene | ||
| Age range of interval: | 33.9 - 23.04 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Rio Guatemala | Formation: | San Sebastian | Local bed: | upper lignite |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | claystone |
| Secondary lithology: | lignite |
| Includes fossils? | Y |
| Lithology description: Clay is considered to be lignitic. | |
Taphonomy
| Modes of preservation: | body,original sporopollenin |
| Size of fossils: | microfossils |
| Spatial orientation: | random |
Collection methods and comments
| Collection excludes: | some microfossils,species names |
| Collection methods: | bulk,chemical,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 32282 | ||
| Authorizer: | E. Kowalski | Enterer: | E. Kowalski |
| Modifier: | E. Kowalski | Research group: | paleobotany |
| Created: | 2003-06-17 16:20:47 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2003-06-17 16:20:47 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 8693. | 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] |