Locality KD Weathered Boulder site: Kungurian, Texas
collected by E. C. Olson, E. L. Yochelson, S. H. Mamay 1946-1948, 1955
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia
- Diplocaulidae
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Diplocaulus recurvatus
Olson 1952
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Reptilia
- Captorhinidae
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Captorhinikos valensis
Olson 1954
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? Captorhinus sp.
Cope 1896
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Molgophidae
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Lysorophus tricarinatus
Cope 1877
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Chondrichthyes
- Xenacanthiformes
- Xenacanthidae
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Xenacanthus sp.
Beyrich 1848
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see common names |
Geography
Country: | United States | State/province: | Texas | County: | Knox |
Coordinates: | 33.7° North, 99.6° West (view map) | ||||
Paleocoordinates: | 2.4° North, 29.0° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | small collection |
Time
Period: | Permian | Epoch: | Cisuralian |
Stage: | Kungurian | 10 m.y. bin: | Permian 2 |
Key time interval: | Kungurian | ||
Age range of interval: | 283.5 - 273.01 m.y. ago |
Stratigraphy
Geological group: | Clear Fork | Formation: | Vale | Member: | "Bullwagon" |
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: "Robert Roth, of the Humble Oil and Refining Company of Wichita Falls, Texas, believes that surfacer and subsurface data show that the beds in question are part of the 'Bullwagon' member of the Vale formation. This places the section high in the Vale, just below the Choza." Olson (1948 p. 190);
the base and top of the Clear Fork Group (i.e., Arroyo, Vale, and Choza formations) are both within the Kungurian: see Wardlaw 2005 (Permophiles) for the base, and DiMichele et al. 2001 (J Paleont) for the top |
Lithology and environment
Primary lithology: | pebbly,green,red conglomerate | ||
Secondary lithology: | lenticular siltstone | ||
Includes fossils? | Y | ||
Includes fossils? | Y | ||
Lithology description: "The channel fill is largely clay pebble conglomerate, with pebbles ranging from a few millimeters to about 8 cm. in diameter. Rounding of the pebbles is uniformly high, but sphericity is varied. [...] The coarsest material tend to lie at the center of the channel, whereas the marginal parts are predominantly sand or clay with fine scattered pebbles." Olson (1948, p. 191) | |||
Environment: | dry floodplain | Tectonic setting: | foreland basin |
Geology comments: "The channels are evidence that a rather large, braided stream passed north or south over the area in a valley of considerable width. The region must have had a moderately high annual rainfall to support the fauna and flora. The total rainfall was perhaps not greatly different from what it is today, and the temperature may have been quite similar, with possibly less seasonal variation. The rains, however appear to have been periodic and torrential [...] " Olson (1948, p. 192) |
Taphonomy
Modes of preservation: | body |
Size of fossils: | mesofossils |
Preservation of anatomical detail: | variable |
Fragmentation: | occasional |
Temporal resolution: | snapshot |
Collection methods and comments
Collection methods: | field collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | E. C. Olson, E. L. Yochelson, S. H. Mamay | Collection dates: | 1946-1948, 1955 |
Collection method comments: Olson (1958) divided the main locality into Quarry Site and Weathered Boulder Site, leaving the main one for recording scattered finds |
Metadata
Database number: | 177015 | ||
Authorizer: | R. Butler | Enterer: | E. Dunne |
Modifier: | E. Dunne | Research group: | vertebrate |
Created: | 2016-03-16 05:07:51 | Last modified: | 2018-01-24 10:49:07 |
Access level: | the public | Released: | 2016-03-16 05:07:51 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
58444. | E. C. Olson. 1958. Fauna of the Vale and Choza: Summary, Review, and Integration of the Geology and the Faunas. Fieldiana Geology 10(32):397-448 [R. Butler/E. Dunne] |