Where: Cascade County, Montana (47.5° N, 111.4° W: paleocoordinates 47.7° N, 60.1° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Kootenai Formation, Late/Upper Aptian (122.5 - 113.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: lacustrine; shale and lenticular sandstone
Size class: macrofossils
Preservation: original carbon
Collection methods: surface (in situ),
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 21151: authorized by Hallie Sims, entered by Heather Lindon on 19.06.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
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| Hepaticae | |
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Marchantiolites blairmorensis Brown and Robison 1976 liverwort (Berry) Brown and Robison, bryophyte w/ thallus and rhizoids
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| Jungermanniopsida | |
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| Marchantiopsida | |
Metzgeriites montanensis n. sp.
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| Polypodiopsida | |
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"Equisetum montanensis" = Equisetum montanense
"Equisetum montanensis" = Equisetum montanense Fontaine 1898 horsetail | |
| unclassified | |
Spermatophyta "Cuticle Type A", Spermatophyta "Cuticle Type B", Spermatophyta "Cuticle Type C", Spermatophyta "Cuticle Type E", Spermatophyta "Cuticle Type F"
Spermatophyta "Cuticle Type A" sp. A; several small pieces of this cuticle were obtained from bulk maceration
Spermatophyta "Cuticle Type B" sp. B; several small pieces of this cuticle were obtained from bulk maceration
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Pseudocycas douglasii Lapasha and Miller 1985 | |
| Sphenopteridae | |
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| Ginkgoopsida | |
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| Schizeaceae | |
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