Great Falls Locality 20: Late Aptian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Coniopteris simplex sterile axis, leaf
Harris 1961
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| (Lindley & Hutton) Harris | ||||||||||
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Sphenopteris mclearni leaf
Bell 1956
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| Bell | ||||||||||
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Dictyothykalos sp.
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| major reticulum of threads forming a net like sac | ||||||||||
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Polypodiopsida
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Cladophlebis virginiensis leaf
Fontaine 1889
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| Fontaine | ||||||||||
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Cladophlebis inclinata leaf
Fontaine 1889
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| Fontaine | ||||||||||
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Cladophlebis oerstedi leaf
Seward 1927
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| (Heer) Seward | ||||||||||
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Cladophlebis oblongifolia leaf
Fontaine 1889
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| Fontaine | ||||||||||
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Cladophlebis constricta leaf
Fontaine 1889
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| Fontaine | ||||||||||
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Polypodiopsida
- Gleicheniales
- Dipteridaceae
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Hausmannia montanensis leaf
Lapasha and Miller 1985
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Polypodiopsida
- Cyatheales
- Cyatheaceae
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Coniopteris hymenophylloides fertile axis, leaf
(Brongniart 1828)
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| (Brongniart) Seward | ||||||||||
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unclassified
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Spermatophyta informal Cuticle type D cuticle
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Sphenopteridae
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Sphenopteris latiloba leaf
Fontaine 1889
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| Fontaine | ||||||||||
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Schizeaceae
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Klukia canadensis axis, leaf
Bell 1956
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| Bell | ||||||||||
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Ginkgoopsida
- Caytoniales
- Caytoniaceae
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Sagenopteris mclearni leaf, cuticle
Berry 1929
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| Berry | ||||||||||
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Sagenopteris williamsii leaf, cuticle
Bell 1956
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| (Newberry) Bell | ||||||||||
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Sagenopteris elliptica leaf, cuticle
Fontaine 1889
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| Fontaine | ||||||||||
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Hepaticae
- Marchantiales
- Marchantiaceae
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Marchantiolites blairmorensis multi organs
Brown and Robison 1976
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| (Berry) Brown and Robison, bryophyte w/ thallus and rhizoids | ||||||||||
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Jungermanniopsida
- Jungermanniales
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Diettertia montanensis leaf
Brown and Robison 1974
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| Brown and Robison | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Cascade |
| Coordinates: | 47.5° North, 111.4° West (view map) | ||||
| Paleocoordinates: | 47.7° North, 60.1° West | ||||
| Basis of coordinate: | estimated from map |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| 10 m.y. bin: | Cretaceous 2-3 | ||
| *Period: | Early/Lower Cretaceous | ||
| *International age/stage: | Middle Aptian - Late/Upper Aptian | ||
| Key time interval: | Late Aptian | ||
| Age range of interval: | 119.5 - 113 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Kootenai |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | "shale" |
| Includes fossils? | Y |
| Environment: | lacustrine indet. |
Taphonomy
| Modes of preservation: | original carbon |
| Size of fossils: | macrofossils |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 21153 | ||
| Authorizer: | H. Sims | Enterer: | H. Lindon |
| Modifier: | H. Sims | Research group: | paleobotany |
| Created: | 2002-06-19 05:49:29 | Last modified: | 2014-02-26 20:01:39 |
| Access level: | the public | Released: | 2002-06-19 05:49:29 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6475. | C. A. Lapasha and C. N. Miller. 1985. Flora of the Early Cretaceous Kootenai Formation in Montana, Bryophytes and Tracheophytes Excluding Conifers. Palaeontographica Abteilung B 196:111-145 [H. Sims/H. Lindon/J. Alroy] |