Also known as 63ABa3231A
Where: Alaska (65.0° N, 141.2° W: paleocoordinates 13.9° N, 56.2° W)
When: Road River Formation, Llandeilian to Llandeilian (466.0 - 449.5 Ma)
• 17 feet above top of limy breccia.
Environment/lithology: offshore; lithified, cherty/siliceous shale
Size class: macrofossils
Collected by Brabb in 1963
Primary reference: M. Churkin, Jr. and E. E. Brabb. 1965. Ordovician, Silurian, and Devonian biostratigraphy of east-central Alaska. Bulletin of the American Association of Petroleum Geologists 49(2):172-185 [A. Miller/S. Kolbe]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 114860: authorized by Arnold Miller, entered by Sarah Kolbe on 25.08.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
| Pterobranchia | |
"? Retiograptus geinitzianus" = Reteograptus geinitzianus
"? Retiograptus geinitzianus" = Reteograptus geinitzianus Hall 1859 graptolite | |
|
? Cryptograptus tricornis Carruthers 1859 graptolite
Glossograptus sp. graptolite | |
|
Isograptus sp. Moberg 1892 graptolite | |
|
Didymograptus sp. McCoy 1851 graptolite | |
|
Pseudoclimacograptus scharenbergi Lapworth 1976 climacograptid | |
Orthograptus cf. calcaratus, "Glyptograptus teretiusculus" = Hustedograptus teretiusculus
Orthograptus cf. calcaratus graptolite
"Glyptograptus teretiusculus" = Hustedograptus teretiusculus Hisinger 1840 graptolite [entered as Glyptograptus teretisculus]
| |
|
Glyptograptus sp. graptolite | |