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Permanent link (DOI): https://doi.org/10.7939/R3WH2DH5Z

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In situ fossil seedlings of a Metasequoia-like taxodiaceous conifer from Paleocene river floodplain deposits of central Alberta, Canada Open Access

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Author or creator
Faldner, A.B.
Stockey, R.A.
Rothwell, G.W.
Additional contributors
Subject/Keyword
Paleocene
Taxodiaceae
Metasequoia
seedlings
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Fossil seeds and seedlings of a Metasequoia-like taxodiaceous conifer occur in Paleocene deposits at the Munce’s Hill and Gao Mine localities of central Alberta, Canada. Compression/impression specimens are preserved in upright growth positions among seedlings of the cercidiphyllaceous dicot Joffrea speirsii Crane & Stockey. There are a large number of seeds, a few of which were buried while germinating and show a radicle or short primary root. More than 500 Metasequoialike seedlings have been identified that have two linear cotyledons with parallel margins and rounded tips. Three specimens have been found that display three cotyledons. Slightly older seedlings show decussate pairs of leaves attached to the stem distal to the cotyledons. Still older seedlings have axillary branches that show varying sizes and numbers of opposite leaves arranged in a single plane distal to the opposite pairs. These specimens reveal that both Joffrea and this extinct taxodiaceous conifer were early colonizers of North American floodplain communities at the beginning of the Tertiary.
Date created
1999
DOI
doi:10.7939/R3WH2DH5Z
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This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
AB Falder, RA Stockey and GW Rothwell. "In situ fossil seedlings of a Metasequoia-like taxodiaceous conifer from Paleocene river floodplain deposits of central Alberta, Canada."American Journal of Botany 86 (1999): 900-902.
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