M1299–SD, Islet in Tuxekan Narrows-Karheen Strait area: Eifelian, Alaska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Murchisoniina
- Cheeneetnukiidae
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Cheeneetnukia frydai
Blodgett and Cook 2002
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Blodgett and Cook 2002 | 11 specimens | ||||||||
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Gastropoda
- Murchisoniina
- Subulitidae
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Subulites (Fusispira) sp.
(Hall 1872)
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3 specimens | |||||||||
| original and current combination Fusispira | ||||||||||
| specimens that appear to be conspecific, or closely allied with Subulites (Fusispira) sp. Blodgett, 1992 | ||||||||||
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Gastropoda
- Euomphalina
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Kitakamispira ormistoni
(Blodgett 1992)
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3 specimens | |||||||||
| recombined as Kitikamispira ormistoni | ||||||||||
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Gastropoda
- Euomphalina
- Pseudophoridae
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Astralites sp.
Whiteaves 1892
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14 specimens | |||||||||
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Gastropoda
- Cycloneritida
- Neritopsidae
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Paffrathopsis informal n.sp.
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28 specimens | |||||||||
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Gastropoda
- Pleurotomariida
- Gosseletinidae
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Euryzone sp.
Koken 1896
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15 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 55.8° North, 123.3° West (view map) | ||
| Paleocoordinates: | 11.2° South, 57.9° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Devonian | Epoch: | Middle Devonian |
| Stage: | Eifelian | 10 m.y. bin: | Devonian 3 |
| Key time interval: | Eifelian | ||
| Age range of interval: | 393.30000 - 387.70000 m.y. ago |
Stratigraphy
| Formation: | Wadleigh Limestone |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | lithified argillaceous "limestone" |
| Secondary lithology: | calcareous "shale" |
| Lithology description: The Wadleigh Limestone, named by Eberlein and Churkin (1970), is a medium- to thick-bedded “relatively pure, fossil-fragmental limestone,” with interbedded argillaceous limestone and calcareous shale in the lower part of the unit. The limestone is rich in corals, crinoid columnals, and the stromatoporoid Amphipora and contains less abundant brach-iopods, gastropods, bivalves, nautiloids, ammonoids, and ostracodes. The unit is inferred to represent patch reefs, reef breccia, and reef-peripheral deposits (Eberlein and Churkin, 1970). | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USNM |
Metadata
| Also known as: | Evans field No. 68AEs596 | ||
| Database number: | 63975 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2006-08-28 13:14:01 | Last modified: | 2009-04-03 12:32:08 |
| Access level: | the public | Released: | 2006-08-28 13:14:01 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 18439. | R. B. Blodgett, D. M. Rohr, S.M. Karl and J.F. Baichtal. 2001. Early Middle Devonian (Eifelian) Gastropods from the Wadleigh Limestone in the Alexander Terrane of Southeastern Alaska Demonstrate Biogeographic Affinities with Central Alaskan Terranes (Farewell and Livengood) and Eurasia. United States Geological Survey Professional Paper 1678:105-110 [P. Wagner/P. Wagner] |
Secondary references:
| 12011 | R. B. Blodgett and A. G. Cook. 2002. Cheeneetnukiidae, a new Middle Devonian murchisonioid gastropod family, including the new genera Cheeneetnukia and Ulungaratoconcha based on representatives from Alaska and Australia. Memoirs of the Queensland Museum 48(1):17-28 [P. Wagner/P. Wagner/P. Wagner] |