Record details

Title
    New Emsian (late Early Devonian) gastropods from Limestone Mountain, Medfra B-4 quadrangle, west-central Alaska (Farewell terrane), and their paleobiogeographic affinities and evolutionary significance
Other titles
    New Emsian (late Early Devonian) gastropods from Limestone Mountain, Medfra B-4 quadrangle, west-central Alaska (Farewell terrane), and their paleobiogeographic affinities and evolutionary significance
Author
    Blodgett, R.
    Frýda, Jiří
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Journal of Paleontology
Vol./nr.
    Roč. 78, č. 1
Pages
    22
Year
    2004
Thesaurus term
    Devon,paleogeografie
Keyword
    Affinities
    Alaska
    B-4
    Devonian
    Early
    Emsian
    Evolutionary
    Farewell
    Gastropods
    Late
    Limestone
    Medfra
    Mountain
    New
    Paleobiogeographic
    Quadrangle
    Significance
    Terrane
    West-central
Abstract (in czech)
   A significant number of small-sized gastropods are described from Emsian (late Early Devonian) strata on the south flank of Limestone Mountain, Medfra B-4 quadrangle, west-central Alaska, providing the first detailed taxonomic inventory of Emsian gastropods from the Farewell terrane of southwestern and west-central Alaska. The fauna is distinctly of Old World Realm character, and contains not a single species in common with Emsian faunas of nearby non-accreted rocks of western Canada and east-central Alaska ('Western Canada Province' of Blodgett et al., 2001a). The genera Balbinipleura and Nanochilina, as well as the subgenus Palaeozygopleura (Rhenozyga), are reported for the first time in the Devonian of the Western Hemisphere. The gastropod fauna includes members of three of five modern gastropod subclasses (i.e., Archaeogastropoda, Caenogastropoda, and Heterobranchia), illustrating that these gastropod lineages were separated from each other since the Early Devonian.
Abstract (in english)
   A significant number of small-sized gastropods are described from Emsian (late Early Devonian) strata on the south flank of Limestone Mountain, Medfra B-4 quadrangle, west-central Alaska, providing the first detailed taxonomic inventory of Emsian gastropods from the Farewell terrane of southwestern and west-central Alaska. The fauna is distinctly of Old World Realm character, and contains not a single species in common with Emsian faunas of nearby non-accreted rocks of western Canada and east-central Alaska ('Western Canada Province' of Blodgett et al., 2001a). The genera Balbinipleura and Nanochilina, as well as the subgenus Palaeozygopleura (Rhenozyga), are reported for the first time in the Devonian of the Western Hemisphere. The gastropod fauna includes members of three of five modern gastropod subclasses (i.e., Archaeogastropoda, Caenogastropoda, and Heterobranchia), illustrating that these gastropod lineages were separated from each other since the Early Devonian.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014