USGS 2689 - northeast end of Heceta Island: Pragian, Alaska
collected by Eberlein 1947
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Stauriida
- Lykophyllidae
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Phaulactis cf. angusta
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Oliver et al. 1975 | |||||||||
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Phaulactis cf. cyathophylloides
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Oliver et al. 1975 | |||||||||
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Conodonta
- Ozarkodinida
- Polygnathidae
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Pandorinellina exigua
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Savage 1977 | |||||||||
| Pandorinellina exigua philipi | ||||||||||
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Conodonta
- Ozarkodinida
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Eognathodus sulcatus
Philip 1965
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Savage 1977 | |||||||||
| Eognathodus sulcatus sulcatus | ||||||||||
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Ozarkodina eberleini n. sp.
Savage 1977
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Savage 1977 | |||||||||
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Conodonta
- Prioniodontida
- Icriodontidae
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Pelekysgnathus klamathensis
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Savage 1977 | |||||||||
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Rhynchonellata
- Orthida
- Schizophoriidae
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Schizophoria cf. fragilis
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Savage 1981 | |||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis sp.
Kozlowski 1929
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Howellella sp.
Kozlowski 1946
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= Howellites amsdeni n. sp.
Savage 1981
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Savage 1981 | |||||||||
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa cf. reticularis
(Linnaeus 1758)
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= Rugosatrypa flexibilis
Modzalevskaya and Cherkesova 1994
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Baranov and Blodgett 2015 | |||||||||
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Rhynchonellata
- Atrypida
- Septatrypidae
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Atrypella scheii
Holtedahl 1914
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Rhynchonellata
- Spiriferinida
- Cyrtinidae
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Cyrtina sp.
Davidson 1858
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Savage 1981 | |||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Camarotoechia reesidei
Kirk and Amsden 1952
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Camarotoechia sp.
Hall and Clarke 1893
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= Linguopugnoides carens
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Savage 1981 | |||||||||
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= Savagerhynchus hecetaensis n. gen., n. sp.
Baranov and Blodgett 2015
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Baranov and Blodgett 2015 | |||||||||
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? Monadotoechia informal sp. nov.
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Savage 1981 | |||||||||
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= Savagerhynchus hecetaensis
Baranov and Blodgett 2015
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Baranov and Blodgett 2015 | |||||||||
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Rhynchonellata
- Rhynchonellida
- Innaechiidae
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Dubovikovia cf. kuzmini
(Cherkesova 1968)
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Baranov and Blodgett 2015 | |||||||||
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Rhynchonellata
- Athyridida
- Athyrididae
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? Protathyris sp.
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Savage 1981 | |||||||||
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira hecetensis
Kirk and Amsden 1952
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Rhynchonellata
- Spiriferida
- Reticulariidae
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Reticulariopsis sp.
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Savage 1981 | |||||||||
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Eospirifer sp.
Schuchert 1913
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Rhynchonellata
- Pentamerida
- Gypidulidae
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? Gypidula sp.
Hall 1867
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= Gypidula aff. pelagica
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Savage 1981 | |||||||||
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Strophomenata
- Strophomenida
- Amphistrophiidae
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Cymostrophia cf. costulata
(Barrande 1879)
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= Harperoides alaskensis
Baranov and Blodgett 2016
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Baranov and Blodgett 2016 | |||||||||
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Strophomenata
- Orthotetida
- Areostrophiidae
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Eoschuchertella sp.
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Savage 1981 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska | County: | Prince of Wales |
| Coordinates: | 55.8° North, 133.3° West (view map) | ||||
| Paleocoordinates: | 15.6° South, 84.8° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Devonian | Epoch: | Early Devonian |
| Stage: | Pragian | 10 m.y. bin: | Devonian 1 |
| Key time interval: | Pragian | Conodont zone: | Eognathodus sulcatus sulcatus |
| Age range of interval: | 410.8 - 407.6 m.y. ago |
Stratigraphy
| Formation: | Karheen | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Savage (1977) found conodonts.
Has been put in Karheen formation, but that should be restricted to the Late Silurian; Blodget et al (2010) note that it is very similar to Soda Creek. | |||||
Lithology and environment
| Primary lithology: | silty "limestone" |
| Lithology description: limestone, shaly limestone and shale. | |
| Environment: | reef, buildup or bioherm |
| Geology comments: Allocthonous deposits. General geological setting interpreted as island arc, in which shelly fossiliferous units represent carbonate banks and reefs. In some places these are associated with plant-bearing or graptolite-bearing shales. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | USGS,USNM | ||
| Collectors: | Eberlein | Collection dates: | 1947 |
Metadata
| Also known as: | 03RB16; 47-AH-R120(F) | ||
| Database number: | 109022 | ||
| Authorizer: | A. Miller, P. Wagner | Enterer: | S. Kolbe, P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Collections that are a subset of this one: | |||
| Created: | 2011-05-10 04:40:23 | Last modified: | 2022-02-19 13:53:05 |
| Access level: | the public | Released: | 2011-05-10 04:40:23 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 36034. | E. Kirk and T. W. Amsden. 1952. Upper Silurian brachiopods from southeastern Alaska. United States Geological Survey Professional Paper 233-C:53-55 [A. Miller/S. Kolbe] |
Secondary references:
| 54392 | V. V. Baranov and R. B. Blodgett. 2015. Revision of the rhynchonellid and atrypid brachiopods from the lower Pragian (Devonian) of Southeast Alaska (Heceta Island). Bulletin of Geosciences 90(1):21-32 [P. Wagner/P. Wagner/P. Wagner] | |
| 58312 | V. V. Baranov and R. B. Blodgett. 2016. Two New Brachiopod Genera from the Lower Pragian (Lower Devonian, Soda Creek Limestone) of West Central Alaska. Paleontological Journal 50(1):34-40 [P. Wagner/P. Wagner/P. Wagner] | |
| 34502 | W. A., J.r. Oliver, C. W. Merriam, and M. Churkin. 1975. Ordovician, Silurian, and Devonian corals of Alaska. United States Geological Survey Professional Paper 823-B:13-44 [A. Miller/S. Kolbe/P. Wagner] | |
| 54394 | N. M. Savage. 1977. Lower Devonian conodonts from the Karheen Formation, southeastern Alaska. Canadian Journal of Earth Sciences 14:278-284 [P. Wagner/P. Wagner] | |
| 54393 | N. M. Savage. 1981. A reassessment of the age of some Paleozoic brachiopods from southeastern Alaska. Journal of Paleontology 55(2):353-369 [P. Wagner/P. Wagner] |