Kasaan Island/Round Island (Amoenospirifer Community) (Devonian of the United States)

Where: Alaska (55.5° N, 132.3° W: paleocoordinates 18.4° S, 83.8° W)

• local area-level geographic resolution

When: gronbergi conodont zone, Early/Lower Emsian (409.1 - 402.5 Ma)

• section is 244.6 m

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; carbonate

• "quiet-water portions of an open lagoon or shelf within Benthic Assemblage 3... abundant micrite... shallow subtidal"

Primary reference: C. M. Soja. 1988. Early Devonian benthic communities of the Alexander Terrane, southeastern Alaska. Lethaia 21:319-338 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3483: authorized by John Alroy, entered by John Alroy on 02.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• composite of three collections from Kasaan Island and one from Round Island; abundance data only given for brachiopods; total number of specimens
Show authors, comments, and common names
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
"abundant solitary rugose corals"
Trilobita
 Proetida - Proetidae
? Lacunoporaspis sp.
? Lacunoporaspis sp. Elkin 1966 trilobite
originally entered as "? Lacunaporaspis sp."
 Lichida - Lichidae
Acanthopyge sp.
Acanthopyge sp. Hawle and Corda 1847 trilobite
 Phacopida - Cheiruridae
"Cheirurus (Crotalocephalus) sp." = Crotalocephalus
"Cheirurus (Crotalocephalus) sp." = Crotalocephalus Salter 1853 trilobite
C. (Crotalocephalus)
Rhynchonellata
 Rhynchonellida - Plectorhynchellidae
? Sibiritoechia sylvia
? Sibiritoechia sylvia
originally entered as "? Sibiritoechia sylvia"
 Rhynchonellida - Aseptorhynchiidae
Aseptirhynchia glabrata
 Terebratulida - Meganterididae
Micidus stellae
 Athyridida - Athyrididae
Leptathyris borki
 Atrypida - Atrypidae
Spinatrypa sp., Anatrypa (Desquamatia) aff. alinensis
Spinatrypa sp. Stainbrook 1951
Anatrypa (Desquamatia) aff. alinensis
A. (Desquamatia) - originally entered as "Anatrypa aff. alinensis"
 Pentamerida - Gypidulidae
Gypidula orbitatus
Gypidula orbitatus
G. oribitatus terrenus - originally entered as "Glypidula orbitatus"
 Spiriferida - Reticulariidae
? Eoreticularia sp. n. sp.
? Eoreticularia sp. n. sp.
originally entered as "? Eoreticularia n. sp."
 Spiriferida - Delthyrididae
Howellella nucula
Howellella nucula
H. nucula alaskensis
 Spiriferida - Ambocoeliidae
Crurithyris sp.
Crurithyris sp. George 1931
 Spiriferida - Adolfiidae
Amoenospirifer sulcalplicata
Strophomenata
 Strophomenida - Amphistrophiidae
Mesodouvillina (Mesodouvillina) sp.
Mesodouvillina (Mesodouvillina) sp. Williams 1950
M. (Mesodouvillina)
Rostroconchia
 Conocardiida - Conocardiidae
Conocardium sp.
Conocardium sp. Bronn 1835