374 Late Devonian Goniatites from New York State EvolutionLate Devonian Goniatites (Cephalopoda, Ammonoidea) from New York State BAP #374 This paper is a revision of the classic nineteenth century goniatite collections from the Devonian of New York State described by James Hall and John M. Clarke. Type material is illustrated photographically, mostly for the first time; the taxonomy is revised, and ontogenetic and statistical data are given, where possible. Detailed biostratigraphic work is reported through
Four continuous stratigraphic sections have been examined - two within the Sequatchie Valley of the Appalachian Plateau (Howard Cemetery and Wilson Branch) and two within the Valley and Ridge Province (Norris Lake IV and Chamberlain Branch)
Recommended for ages 8 years and up
Correlations are based on published and unpublished stratigraphic
are identical to those in the Devoniglansus unicus assemblage from the Kurosegawa Tectonic Zone
The challenges they faced—both societal and scientific—are explored through a series of colorfully illustrated vignettes
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and packed with detailed information on recognition
The Rock and Gem Book: And Other Treasures of the Natural World
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100-Piece Puzzle
has been at the frontlines of history as the grim reaper
After a period of low diversity during the late Early and Middle Miocene the diversity reached a maximum during Late Miocene times
