Where: Park County County, Wyoming (45.0° N, 109.6° W: paleocoordinates 28.2° S, 47.1° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Beartooth Butte Formation, Emsian (407.6 - 393.3 Ma)
• age based on dispersed spore data (McGregor, personal communication to Tanner).
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; lithified, gray, calcareous mudstone and lithified, calcareous shale
Size classes: macrofossils, microfossils
Preservation: mold/impression, adpression, permineralized, replaced with pyrite
Collection methods: quarrying, surface (float), surface (in situ), chemical, mechanical, peel or thin section,
• most plant fossils seem to come from Dorf's lithological sequence C; however, fossils collected for this study are from talus.
Primary reference: W. R. Tanner. 1984. A Fossil Flora from the Beartooth Butte Formation of Northern Wyoming. [P. Gensel/P. Gensel/P. Gensel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 26176: authorized by Pat Gensel, entered by Pat Gensel on 07.10.2002, edited by Roy Plotnick
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
"Trimerophyte" indet., Sawdonia wyomingense n. sp., "Morphotype I" indet., "Morphotype II" indet., Helemacanthus incurvus, Pimmacanthus inequistriatus
"Morphotype I" indet. = Psilophyton wyomingense of Dorf - sterile axes only, preclude designating as Psilophyton
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Pteraspidomorpha | |
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Pteraspidomorphi | |
Chondrichthyes | |
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"Onchus peracutus" = Bryantonchus peracutus
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Osteichthyes | |
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Placodermi | |
Bryantolepis brachycephalus, Bryantolepis cristatus, Bryantolepis major, Bryantolepis obscurus, Anarthraspis montanus, Anarthraspis chamberlini
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Petromyzontida | |
Euchelicerata | |
Strobilopterus princetoni eurypterid | |
Jaekelopterus ? howelli Kjellesvig-Waering and Stoermer 1952 eurypterid | |
Dorfopterus angusticollis eurypterid | |
Lingulata | |
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Rhyniopsida | |
Renalia dorfii n. sp.
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Retusotriletes | |
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Retusotriletes simplex | |
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Apiculatisporis | |
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Protolepidodendraceae | |
Leclercqia complexa Banks et al. 1972 | |
Sphenopsida | |
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Drepanophycus | |
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Psilophytopsida | |
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Apiculiretusispora | |
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Chomotriletes | |
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Grandispora | |
Grandispora ? biornata, Grandispora douglastownense, Grandispora ? macrotuberculata, Grandispora micronata
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