Relative taxonomic and ecologic stability in Devonian marine faunas of New York State: a test of coordinated stasis

摘要: Abstract The concept of coordinated stasis, manifest as a pattern long intervals concurrent taxonomic and ecologic persistence separated by comparatively abrupt periods biotic change, has been challenged in recent studies that claim lack prolonged taxa associations. A key problem the difficulty distinguishing faunal change owing to localized, short-term environmental fluctuation or patchiness from indicating regionally pervasive, long-term evolutionary ecological change. Here, we use an extensive database Middle Devonian Hamilton Group Appalachian Basin test for within this ecological-evolutionary subunit, succession purported relative stability. Replicate samples collected many localities stratigraphic horizons over wide geographic area allow us address effects small-scale variation localized while exploring basin-scale fauna...