Palynology and micropaleontology of the Clam Bank Formation (Lower Devonian) of western Newfoundland, Canada

Sandstone and siltstone samples collected from the lowest part of the Clam Bank Formation in western Newfoundland contain a distinctive monospecific conodont assemblage of Ozarkodina remscheidensis eosteinhornensis and O. remscheidensis ssp., confidently dated as Late Ludlow through Lochkovian. Paly...

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Veröffentlicht in:Palynology 2002, Vol.26 (1), p.185-215
Hauptverfasser: Burden, Elliott T, Quinn, Louise, Nowlan, Godfrey S, Bailey-Nill, Linda A
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Quinn, Louise
Nowlan, Godfrey S
Bailey-Nill, Linda A
description Sandstone and siltstone samples collected from the lowest part of the Clam Bank Formation in western Newfoundland contain a distinctive monospecific conodont assemblage of Ozarkodina remscheidensis eosteinhornensis and O. remscheidensis ssp., confidently dated as Late Ludlow through Lochkovian. Palynomorph assemblages of terrestrial spores, acritarchs, chitinozoans, scolecodonts and plant fragments are relatively abundant and diverse in the lower 250 m of this formation. Taxa include the cryptospore genera Cymbohilates, Acontotetras, Hispanaediscus, Laevolancis, and Tetrahedraletes, spore genera Ambitisporites, Aneurospora, Apiculiretusispora, Emphanisporites, Retusotriletes, Synorisporites, Vermiverruspora, and a new species Stellatispora fahraeusi. Acritarchs include the taxon Triangulina sanpetrensis and chitinozoa include Angochitina chlupaci. Palynomorphs indicate a Lochkovian age, corresponding with the Apiculiretusispora sp. E zone from Europe. In well preserved samples from this section, the fossil terrestrial palynomorph assemblages from these shallow marine deposits correspond closely in species diversity and concentration with values reported for modern shelf deposits located adjacent to low Arctic moss and sedge tundra. By inference, earliest Devonian terrestrial vegetation must have been relatively well developed on this ancient coastline.
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source JSTOR Archive Collection A-Z Listing
subjects acritarchs
assemblages
Canada
Chitinozoa
Clam Bank Formation
Clams
clastic rocks
coastal environment
Conodonta
correlation
Devonian
Eastern Canada
Fossils
Geological surveys
Geology
Invertebrata
Lochkovian
Lower Devonian
microfossils
new taxa
Newfoundland
Newfoundland and Labrador
Newfoundland Island
paleoecology
Paleontology
Paleozoic
Palynology
Palynomorphs
Port au Port Peninsula
sandstone
scolecodonts
sedimentary rocks
siltstone
Siltstones
species diversity
Spores
Stellatispora
Stellatispora fahraeusi
Stratigraphy
Taxa
taxonomy
terrestrial environment
vegetation
Vermes
title Palynology and micropaleontology of the Clam Bank Formation (Lower Devonian) of western Newfoundland, Canada
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