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The AAPG/Datapages Combined Publications Database
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Abstract
Palaeontology
Upper Devonian Algae from Western Australia
Abstract
Calcareous algae are common constitutents in all facies of limestone reef complexes of Frasnian and Famennian ages in the northern part of the Canning basin of Western Australia. This diverse and abundant algal flora more closely resembles Devonian algal floras of central Asia than those of North America or Europe.
Red algae are represented by Solenopora, Parachaetetes, and Stenophycus. Keega and Tharama have cellular tissue similar to coralline red algae. Green algoe include Litanaia and Ortonella (Codiaceae) and Vermiporella (Dasycladaceae). Blue-green algae are the dominant group, both in abundance and numbers of species, and include Girvanella, Sphaerocodium, Renalcis, and Paraepiphyton.
Some genera are volumetrically significant. Solenopores are most common in back-reef facies, but also occur in reef and fore-reef deposits. Keega and Tharama appear to be restricted to reef limestones. Green algae are rather uncommon and occur chiefly in rocks interpreted as back-reef and fore-reef facies. Blue-green algae are very abundant and widespread in the reef facies, and Renalcis and Sphaerocodium were important frame-building organisms.
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