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Florissant Formation

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Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/2008.2435(08)
... During the past five years, renewed prospecting and collecting of mammalian fossils in the Florissant Formation within Florissant Fossil Beds National Monument in central Colorado has nearly tripled the known diversity of fossil mammals from this rock unit. Taxa first recorded here from...
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Journal Article
Published: 01 June 2016
Canadian Journal of Earth Sciences (2016) 53 (6): 630–643.
...Bret L. Buskirk; Joanne Bourgeois; Herbert W. Meyer; Elizabeth A. Nesbitt Abstract The freshwater molluscan assemblage from the uppermost Eocene Florissant Formation (34.07 ± 0.10 Ma), Colorado, USA, provides a reliable proxy in reconstructing past ecology and environmental characteristics...
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Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/2008.2435(06)
... The fossil plants found in the Eocene Florissant Formation and Green River Formation are preserved with a level of detail that allows one to closely examine traces of insect feeding damage. Levels (amounts) and patterns (abundance of various types) of fossilized insect feeding damage from...
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Journal Article
Journal: PALAIOS
Published: 01 July 2012
PALAIOS (2012) 27 (7): 481–488.
... Formation of Colorado. These lithologies were chosen because they reflect differences in associated energy, grain size, and presence of diatom layers. Eight hundred and twenty-three fossil insects were collected from a single stratigraphic section within the lacustrine deposits of the Florissant Formation...
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Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/SPE435
Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/2008.2435(02)
... Scanning electron microscopy (SEM) of insect and plant fossils in the lacustrine shales of the Eocene Florissant Formation of Florissant, Colorado, was used to investigate the mechanisms of fossil preservation. The fossiliferous Florissant “paper shales” are composed of thin laminae...
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Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/2008.2435(07)
... Using available shape characters we conducted an outline morphometric analysis to make family-level identifications of fossil spiders from the Florissant Formation in Colorado. In this analysis we used carapace shape because it is a character that can be observed on most fossil spiders, and we...
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Journal Article
Published: 01 January 2002
Rocky Mountain Geology (2002) 37 (1): 1–11.
...Neal R. O'Brien; Herbert W. Meyer; Kimberly Reilly; Angelena M. Ross; Stacey Maguire Abstract The remarkably well-preserved fossils in the Florissant Formation (Eocene) at Florissant, Colorado occur in a lacustrine shale consisting of numerous couplets of millimeter-thin, alternating laminae...
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Journal Article
Published: 01 September 1982
Journal of Paleontology (1982) 56 (5): 1213–1217.
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Location map for samples collected from <b>Florissant</b> <b>Formation</b> in <b>Florissant</b> ...
Published: 01 January 2002
Figure 1. Location map for samples collected from Florissant Formation in Florissant Fossil Beds National Monument (large arrow) and outside of Monument at Florissant Fossil Quarry (small arrow). Map modified from original by John Piveral.
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Localities and geographic extent of the <b>Florissant</b> <b>Formation</b>. Modified from...
Published: 01 June 2016
Fig. 1. Localities and geographic extent of the Florissant Formation. Modified from Evanoff et al. (2001) and McLeroy and Anderson (1966) .
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Simplified stratigraphic column of the <b>Florissant</b> <b>Formation</b>. Adapted from  ...
Published: 01 June 2016
Fig. 2. Simplified stratigraphic column of the Florissant Formation. Adapted from Evanoff et al. (2001) . Samples (approximate stratigraphic position shown) include mollusks from the middle shale and caprock conglomerate units and a fibrous calcite vein from the caprock conglomerate.
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General stratigraphy of the <b>Florissant</b> <b>Formation</b>, redrawn from  Evanoff et ...
in > PALAIOS
Published: 01 July 2012
F igure 1— General stratigraphy of the Florissant Formation, redrawn from Evanoff et al. (2001) .
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Map showing extent of <b>Florissant</b> <b>Formation</b> (gray shading) and location of c...
in > PALAIOS
Published: 01 July 2012
F igure 2— Map showing extent of Florissant Formation (gray shading) and location of collecting site. Modified from Smith and Moe-Hoffman (2007) .
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FIGURE 1 —Map of the <b>Florissant</b> <b>Formation</b> exposures with UCM 80313 (Cockere...
in > PALAIOS
Published: 01 December 2007
FIGURE 1 —Map of the Florissant Formation exposures with UCM 80313 (Cockerell 13) and 80314 (Cockerell 14)
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FIGURE 2 —Generalized stratigraphy of the <b>Florissant</b> <b>Formation</b> (based on  E...
in > PALAIOS
Published: 01 December 2007
FIGURE 2 —Generalized stratigraphy of the Florissant Formation (based on Evanoff et al., 2001 ). Most fossil insects have come from the Middle Shale Unit
Series: GSA Field Guide
Published: 01 January 2004
DOI: 10.1130/0-8137-0005-1.151
EISBN: 9780813756059
... Abstract This field trip in the vicinity of the Florissant fossil beds includes five stops that examine the Precambrian Cripple Creek Granite and Pikes Peak Granite, and the late Eocene Wall Mountain Tuff, Thirtynine Mile Andesite lahars, and Florissant Formation. The Cripple Creek Granite...
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Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2000
DOI: 10.1306/St46706C39
EISBN: 9781629810713
... and Table 1 ) preserve the only sedimentary records for understanding the tectonic, climatic, and paleoenvironmental history of this region during this time. The upper Eocene Florissant Formation was deposited in a blocked stream drainage on the Rocky Mountain erosion surface of the central Rocky...
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Series: GSA Special Papers
Published: 31 December 2019
DOI: 10.1130/2018.2536(10)
EISBN: 9780813795362
... ABSTRACT The late Eocene Florissant Formation in central Colorado is a rich and diverse continental Lagerstätte yielding well-preserved fossil assemblages from lacustrine and fluvial facies. This investigation focused on the lacustrine facies at Clare’s Quarry and used biotic and abiotic...
Series: GSA Special Papers
Published: 27 November 2018
DOI: 10.1130/2018.2535(20)
EISBN: 9780813795355
... at the Smithsonian National Museum of Natural History. A quantitative analysis of taxonomic diversity among museum collections of fossil insects from the Florissant Formation indicates that taxonomists selectively identified taxa, substantially influencing the overall taxonomic richness and evenness...
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