Palm fronds from western Canada are the northernmost palms from the Late Cretaceous of North America and may include the oldest Arecaceae
Palm leaf fossils are common from Late Cretaceous floras in the United States, but Late
Cretaceous Canadian palm records are limited largely to Nanaimo Group strata of British
Columbia, with only anecdotal records from east of the Rocky Mountains. Here we report
Late Cretaceous leaf fossils from Alberta and Saskatchewan, Canada. Segment angles with
the rachis or costa are investigated as an additional character to distinguish costapalmate
from pinnate and entire-pinnate palm leaves. The leaf fossils from Alberta and …
Cretaceous Canadian palm records are limited largely to Nanaimo Group strata of British
Columbia, with only anecdotal records from east of the Rocky Mountains. Here we report
Late Cretaceous leaf fossils from Alberta and Saskatchewan, Canada. Segment angles with
the rachis or costa are investigated as an additional character to distinguish costapalmate
from pinnate and entire-pinnate palm leaves. The leaf fossils from Alberta and …
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