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Studies of Paleozoic Seed Ferns: Anatomy and Morphology of Morphology of Microspermopteris aphyllum.
Download1976
The discovery of numerous specimens of the monostelic pteridosperm genus Microspermop- teris in Pennsylvanian coal ball petrifactions from the Lewis Creek and What Cheer localities provides additional information about the anatomical and morphological variability within the genus. Specimens are...
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1983
Fossil seedlings and seeds of an extinct Cercidiphyllum-like plant occur in the Paskapoo Formation (Late Paleocene) at Joffre Bridge near Red Deer, Alberta. Cotyledon and early seedling leaf stages are preserved in growth position. Morphological details of seedlings and seeds support a close...
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1986
Three fragments of fascicles of a possible five-needle pine are described from the Upper Cretaceous Yezo Group (Santonian/Senonian) of Hokkaido. Specimens from the Omakizawa, Oyubari, Yubari City, the Koyanozawa, Ikushumbetsu, Mikasa City, and the Sankebetsugawa, Haboro are preserved in calcium...
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Paleozoic Seed Ferns: Heterangium kentuckyensis sp. nov., from the Upper Carboniferous of North America.
Download1987
Stockey, R.A., Pigg, K.B., Taylor, T.N.
Heterangium kentuckeyensis sp. nov. is described from Lower/Middle Pennsylvanian sediments of eastern Kentucky, based on permineralized stems, petioles, frond members, laminar foliage, and roots, including several organs in attachment. Stems 2.2 to 5.8 mm in diameter are known in several...
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Permineralized Fruits and Seeds from the Princeton Chert (Middle Eocene) of British Columbia: Araceae.
Download1988
Cevallos-Ferriz, S., Stockey, R.A.
Some of the most conspicuous fruit and seed remains from the Middle Eocene Princeton chert locality (Allenby Formation) are assignable to the Araceae. Several thousand campylotropous, reniform, spiny seeds 2.5-3.2 mm long x 1.8-2.3 mm wide have been found dispersed in the chert. Two fruits, each...
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1989
Vegetative and fertile frond segments of Botrychium have been recovered from Paleocene deposits of central Alberta, Canada. Specimens are preserved as coalified compressions that yield information about frond structure, sporangia, and spore ultrastructure. These fossils, described as Botrychium...
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A Morphological Investigation of the Unusual Cryptogeal Germination Strategy of Bunya Pine (Araucaria bidwillii)-An Australian Rain Forest Conifer.
Download1992
Burrows, G.E., Stockey, R.A., Boag, T.S.
The morphology of the cryptogeal germination sequence of Araucaria bidwillii (bunya pine) was studied. Individual seeds were 5-6 cm in length and 2.5-3.5 cm in diameter and had an average fresh weight of ca. 16 g. In mature seeds the embryo consisted of a cotyledon tube, hypocotyl, and root cap...
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1992
Stockey, R.A., Woltz, P., Ko, H.
Cuticle micromorphology of leaves from all five species of the Southern Hemisphere conifer genus Falcatifolium de Laubenfels (Podocarpaceaew) as studied with scanninge lectron microscopy. Both herbarium and preserved specimens were examined and showed no differences in micromorphology. External...