Royal Creek Sec. 1, at 247-24.55 meters (810 - 835 feet) above base: Pragian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Euomphalina
- Tubinidae
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Semitubina yukonensis
Blodgett et al. 2001
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Blodgett et al. 2001 | 1 individual | ||||||||
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira laevigata
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Lenz 1977 | 7 specimens | ||||||||
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides variabilis
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116 specimens | |||||||||
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Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Ambocoelia aff. praecox
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Lenz 1977 | 120 specimens | ||||||||
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Plicoplasia acutiplicata
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Lenz 1977 | 18 specimens | ||||||||
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Rhynchonellata
- Spiriferida
- Reticulariidae
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Reticulariopsis sp.
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Lenz 1977 | 10 specimens | ||||||||
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Rhynchonellata
- Spiriferida
- Delthyrididae
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Howellella aff. khalfini
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Lenz 1977 | 1 specimen | ||||||||
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Rhynchonellata
- Spiriferida
- Cyrtinopsidae
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Plicocyrtina sinuplicata
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Lenz 1977 | 65 specimens | ||||||||
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Rhynchonellata
- Orthida
- Hesperorthidae
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"Dolerorthis" borealis
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39 specimens | |||||||||
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Rhynchonellata
- Orthida
- Kayserellidae
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Kayserella costatula
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20 specimens | |||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Cortezorthis norfordi
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6 specimens | |||||||||
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Cortezorthis perryi
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41 specimens | |||||||||
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Protocortezorthis aff. fornicatimcurvata
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7 specimens | |||||||||
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Rhynchonellata
- Orthida
- Schizophoriidae
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Schizophoria cf. paraprima
Johnson et al. 1973
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96 specimens | |||||||||
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Rhynchonellata
- Orthida
- Draboviidae
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Muriferella aff. masurskyi
Johnson and Talent 1967
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73 specimens | |||||||||
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Rhynchonellata
- Atrypida
- Carinatinidae
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Davidsoniatrypa johnsoni
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Lenz 1977 | 62 specimens | ||||||||
| synonym of Biconostrophia | ||||||||||
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Rhynchonellata
- Atrypida
- Karpinskiidae
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Totia intermediafera
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Lenz 1977 | 246 specimens | ||||||||
| synonym of Vagrania | ||||||||||
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa virilicosta
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Lenz 1977 | 6 specimens | ||||||||
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Spinatrypa informal sp. 1
Stainbrook 1951
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81 specimens | |||||||||
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Spinatrypa echinocostata
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Lenz 1977 | 96 specimens | ||||||||
| 81 + 14 S. cf. S. echinocostata | ||||||||||
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Rhynchonellata
- Atrypida
- Glassiidae
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Cryptatrypa informal sp. 1
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Lenz 1977 | 49 specimens | ||||||||
| synonym of Glassia | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Machaerariidae
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Latonotoechia ludvigseni
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15 specimens | |||||||||
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Thliborhynchia julli
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137 specimens | |||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Nymphorhynchia nympha
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3 specimens | |||||||||
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Rhynchonellata
- Rhynchonellida
- Leiorhynchidae
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Werneckeella hartensis
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51 specimens | |||||||||
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Rhynchonellata
- Pentamerida
- Gypidulidae
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Gypidula informal sp. 1
Hall 1867
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34 specimens | |||||||||
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Gypidula boucoti
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47 specimens | |||||||||
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Sieberella cf. problematica
(Barrande 1847)
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36 specimens | |||||||||
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Rhynchonellata
- Pentamerida
- Parastrophinidae
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Grayina magnifica
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11 specimens | |||||||||
| spelled with current rank as Anastrophia (Grayina) | ||||||||||
| G. maginifica arctica | ||||||||||
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Strophomenata
- Orthotetida
- Areostrophiidae
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Aesopomum regularis
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2 specimens | |||||||||
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Drahanostrophia informal sp. 1
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21 specimens | |||||||||
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Strophomenata
- Strophomenida
- Leptostrophiidae
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Leptostrophia informal sp. 1
Hall and Clarke 1892
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2 specimens | |||||||||
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"Nervostrophia" sp.
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9 specimens | |||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptagonia informal sp. 1
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19 specimens | |||||||||
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Strophomenata
- Strophomenida
- Douvillinidae
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Phragmostrophia mucronata
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61 specimens | |||||||||
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Cymostrophia cf. stephani
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16 specimens | |||||||||
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Strophomenata
- Strophomenida
- Eodevonariidae
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? Eodevonaria sp.
Twenhofel 1914
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1 individual | |||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Yukon |
| Coordinates: | 64.8° North, 135.2° West (view map) | ||
| Paleocoordinates: | 0.1° South, 41.7° West | ||
| Basis of coordinate: | stated in text |
Time
| Period: | Devonian | Epoch: | Early/Lower Devonian |
| Stage: | Pragian | 10 m.y. bin: | Devonian 1 |
| Key time interval: | Pragian | Graptolite zone: | Monograptus yukonensis |
| Age range of interval: | 410.80000 - 407.60000 m.y. ago |
Stratigraphy
| Formation: | Road River | ||
| Local section: | Royal Creek 1 | Local bed: | 247 - 254.4 |
| Local order: | bottom to top |
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: During the Late Silurian and Early Devonian, the Royal Creek area lay at the margin of a deep-water embayment. The transition from shallow to deep water was relatively abrupt, with very thick shallow-water (including intertidal and shallow subtidal), sparsely fossiliferous carbonates accumulating on the large platform immediately to the east, southeast, and south of the study area, and deep-water, graptolite-rich shales and calcareous shales of the Road River Group accumulating in a northwest-facing trough that joined to the Blackstone River and Richardson troughs (Lenz, 1972 ; Norford, 1997 ). In the transitional zone, perhaps no more than one kilometer in width, brachiopods flourished, and trilobites, bryozoans, corals and gastropods were relatively common (Lenz, 1977a, 1977b, 1982 ). Sea-level fluctuations through this time period are evidenced in the area by tongues of the deeper water facies trangressing over the shallower-water carbonates, alternating with tongues of the latter facies prograding over deeper water facies. During times of shallow-water deposits prograding over deeper water facies, coupled with a relatively steep slope margin (still visible in a few localities), benthic organisms found themselves in a very unstable environment and, perhaps triggered by earth tremors, cascaded into deeper waters. As a result, the most richly fossiliferous carbonates are predominantly debris-flow deposits, in which shallower and deeper dwelling benthic faunas within any debris-flow bed are entirely intermixed. (From Blodgett, Frýda & Lenz 2001.) | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection excludes: | some macrofossils,some microfossils |
| Collection methods: | bulk,chemical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | GSC |
| Collection method comments: Lenz (1977) gives this as 810-835' whereas Blodgett et al. (2001) give it as 247-252.5 meters. | |
Metadata
| Database number: | 43969 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Subset of collection #: | 24933 | ||
| Created: | 2004-08-30 12:43:29 | Last modified: | 2010-11-27 17:18:43 |
| Access level: | the public | Released: | 2004-08-30 12:43:29 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7341. | A. C. Lenz. 1977. Upper Silurian and Lower Devonian brachiopods of Royal Creek, Yukon Canada. Part 1. Orthoida, Strophomenida, Pentamerida, Rhynchonellida. Palaeontographica Abteilung A 159(1-3):37-109 [M. Foote/M. Foote/M. Foote] |
Secondary references:
| 10634 | 1% | R. B. Blodgett, J. Fryda, and A. C. Lenz. 2001. Semitubina yukonensis new species, first occurrence of this biogeographically distinctive Old World realm gastropod genus in the Lower Devonian of the Western Hemisphere. Journal of Paleontology 75(2):466-470 [P. Wagner/K. Koverman/P. Wagner] |
| 7342 | A. C. Lenz. 1977. Upper Silurian and Lower Devonian brachiopods of Royal Creek, Yukon Canada. Part 2. Spiriferida: Atrypacea, Dayiacea, Athyridacea, Spiriferacea. Palaeontographica Abteilung A 159(5-6):111-138 [M. Foote/M. Foote/P. Wagner] |