Elgin Standard: Early Eocene, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Angiospermae
- Moraceae
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Ficus berryi leaf
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6 specimens | |||||||||
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unclassified
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| 16 specimens | ||||||||||
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Angiospermae
- Moraceae
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Artocarpus lessigiana leaf
(Knowlton)
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| abundance omitted | ||||||||||
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Angiospermae
- Sapindales
- Sapindaceae
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Sapindus linearifolius leaf
Berry 1916
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2 specimens | |||||||||
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Cupanites formosus leaf
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6 specimens | |||||||||
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Angiospermae
- Fagales
- Juglandaceae
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Juglans bastropensis leaf
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20 specimens | |||||||||
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Angiospermae
- Fagales
- Nothofagaceae
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| 4 specimens | ||||||||||
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Angiospermae
- Celastrales
- Celastraceae
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| 100 specimens | ||||||||||
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Angiospermae
- Fabales
- Fabaceae
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Inga laurinafolia leaf
Berry 1916
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4 specimens | |||||||||
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Angiospermae
- Rosales
- Papilionaceae
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Sophora wilcoxiana leaf
Berry 1916
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3 specimens | |||||||||
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Angiospermae
- Vitales
- Vitaceae
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Cissus pulcherrima leaf
|
3 specimens | |||||||||
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Angiospermae
- Parietales
- Ternstroemiaceae
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| 17 specimens | ||||||||||
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Angiospermae
- Myrtales
- Combretaceae
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Combretum bartonii leaf
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2 specimens | |||||||||
| 6 specimens | ||||||||||
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Angiospermae
- Primulales
- Myrsinaceae
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Icacorea prepaniculata leaf
Berry 1916
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9 specimens | |||||||||
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Angiospermae
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Carpolithus sp. seed/fruit
Linnaeus 1768
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40 specimens | |||||||||
| "form genus" | ||||||||||
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Angiospermae
- Laurales
- Lauraceae
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Nectandra lancifolia leaf
(Lesquereux 1869)
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5 specimens | |||||||||
| 17 specimens | ||||||||||
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Oreodaphne obtusifolia leaf
Berry 1916
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32 specimens | |||||||||
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Oreodaphne pseudoguianensis leaf
Berry 1916
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3 specimens | |||||||||
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Angiospermae
- Gentianales
- Apocynaceae
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| 11 specimens | ||||||||||
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Angiospermae
- Dilleniales
- Dilleniaceae
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Dillenites sp. leaf
Berry 1916
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2 specimens | |||||||||
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Dillenites texensis leaf
Berry 1916
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8 specimens | |||||||||
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Dillenites microdentatus leaf
(Hollick 1899)
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19 specimens | |||||||||
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Angiospermae
- Magnoliales
- Annonaceae
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Annona ampla leaf
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13 specimens | |||||||||
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Angiospermae
- Magnoliales
- Magnoliaceae
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| 6 specimens | ||||||||||
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Magnolia leei leaf
Knowlton 1916
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36 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Bastrop |
| Coordinates: | 30.3° North, 97.3° West (view map) | ||||
| Paleocoordinates: | 36.1° North, 74.4° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Early Eocene | ||
| Age range of interval: | 56 - 48.07 m.y. ago |
Stratigraphy
| Geological group: | Wilcox | Formation: | Rockdale | Member: | Butler Clay |
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: thought to be "lower Eocene" but possibly late Paleocene because the member straddles the epoch boundary | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Secondary lithology: | lithified claystone |
| Lithology description: "15 feet of alternating layers of fossiliferous sand and clay underlain by at least 16 feet of non-leaf-bearing, black, silty clay" | |
| Environment: | terrestrial indet. |
| Geology comments: "paratropical rain forest" | |
Taphonomy
| Modes of preservation: | body,adpression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Also known as: | Butler | ||
| Database number: | 98211 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | paleobotany |
| Created: | 2010-09-23 19:51:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2010-09-23 19:51:12 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 33945. | R. S. Irving and T. F. Stuessy. 1971. A new paratropical angiosperm florule in the Eocene Rockdale Formation of Bastrop County, Texas. Southwestern Naturalist 16(1):111-116 [J. Alroy/J. Alroy] |