List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Lepidodendrales
- Lepidodendraceae
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Lepidophloios laricinus axis
(Sternberg 1820)
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Lepidophylloides sp. leaf
Snigirevskaya 1958
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Lepidostrobophyllum sp. non-seed repro
Hirmer 1927
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Sigillariaceae
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Sigillaria ovata axis
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Sigillaria sp. axis
Brongniart 1822
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Syringodendron sp. axis
Sternberg 1820
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Coniferales
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Lepidostrobus sp. non-seed repro
Brongniart 1828
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unclassified
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Neuropteris cf. gigantea leaf
Sternberg 1825
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| mesophyll visible on partly petrified specimens | ||||||||||
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Stigmaria ficoides root
Sternberg 1822
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Polypodiopsida
- Equisetales
- Calamitaceae
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Calamites cistii axis
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Calamites distachyus axis
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Calamites cruciatus axis
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Neuropteridae
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Medullosaceae
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| seed fern pinnules | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Fremont |
| Coordinates: | 38.4° North, 105.2° West (view map) | ||||
| Paleocoordinates: | 4.6° South, 39.8° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| Stage: | Bashkirian | 10 m.y. bin: | Carboniferous 4 |
| *Period: | Middle Carboniferous - Late/Upper Carboniferous | *Epoch: | Bashkirian - Moscovian |
| *International age/stage: | Duckmantian - Vereiskian | *Local age/stage: | Morrowan - Atokan |
| Key time interval: | Morrowan - Atokan | ||
| Age range of interval: | 323.4 - 312.8 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Fountain |
Lithology and environment
| Primary lithology: | red,white,yellow "siliciclastic" |
| Secondary lithology: | bioturbation,paleosol/pedogenic,red mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: At the first locality various types of plant impressions are present in the interbedded red sandstone and maroon to buff siltstone adjacent to the lower contact of the Fountain. Sandstones are described as arkosic. At the second locality...red mudstone that overlies the lowermost arkosic sandstone of the Fountain Formation. This mudstone is believed to represent a paleosol with stigmarian axes preserved in situ. Third locality (West of Garden Park) includes a basal fine-grained red sandstone | |
| Environment: | fluvial indet. |
| Geology comments: Second locality described as a paleosol.
Fountain Formation is generally regarded as a fluvial, orogenic basin | |
Taphonomy
| Modes of preservation: | cast,mold/impression,permineralized,replaced with hematite |
| Size of fossils: | macrofossils |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UMMP |
Metadata
| Database number: | 11205 | ||
| Authorizer: | H. Sims | Enterer: | S. Ostrowski, A. McGowan |
| Modifier: | A. McGowan | Research group: | paleobotany |
| Created: | 2001-07-23 09:11:55 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2001-07-23 09:11:55 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 4133. | J. R. Jennings. 1980. Fossil plants from the Fountain Formation (Pennsylvanian) of Colorado. Journal of Paleontology 54(1):149-158 [H. Sims/S. Ostrowski/M. Uhen] |