Index Catalog // ScholarsArchive@OSU

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Creator:: Gernandt, David S., Magallon, Susana, Lopez, Gretel Geada, Flores, Omar Zeron, Willyard, Ann, and Liston, Aaron
Abstract:: Uncertainties in the age and phylogenetic position of Pinaceae fossils present significant obstacles to our understanding of the timing of diversification in the family. We demonstrate that simultaneous phylogenetic analyses of chloroplastDNA(matK and rbcL) and nonmolecular characters that include both extant genera and a limited number of fossil taxa provide...
Resource Type:: Article
Full Text:: López,y Omar Zerón Flores,z Ann Willyard,§ and Aaron Listonk *Departamento de Botánica, Instituto de

Bisexual Flowers from the Coniacian (Late Cretaceous) of Vancouver Island, Canada: Ambiplatanus washingtonensis gen. et sp. nov. (Platanaceae)

Creator:: Mindell, Randal A., Karafit, Steven J., and Stockey, Ruth A.
Abstract:: PREMISE OF RESEARCH: Anatomically preserved platanaceous inflorescences have been found in rocks of Late Cretaceous (Coniacian) age at the Eden Main locality on Vancouver Island, British Columbia, Canada. METHODOLOGY: Specimens occur in calcium carbonate concretions near the base of the Nanaimo Group (Comox Formation) and are studied with the cellulose...
Resource Type:: Article
Full Text:: from the plastid gene rbcL. Ann Mo Bot Gard 80:528–580. Craggs HJ 2005 Late Cretaceous climate signal

A ranunculalean liana stem from the cretaceous of British Columbia, Canada: Atli morinii gen. et sp nov.

Creator:: Smith, Selena Y., Little, Stefan A., Cooper, Ranessa L., Burnham, Robyn J., and Stockey, Ruth A.
Abstract:: Premise of research. The lianoid habit is found in 125 extant plant families and is most diverse and abundant in structurally complex forests, such as tropical forests. A stem with lianoid anatomy is described from Cretaceous sediments of Hornby Island, British Columbia. Methodology. The stem segment, 2.5 cm in diameter...
Resource Type:: Article
Full Text:: ,†,# and Ruth A. Stockey** *Department of Earth and Environmental Sciences, University of Michigan, Ann

Evolution and Phylogeny of Gnetophytes: Evidence From the Anatomically Preserved Seed Cone Protoephedrites Eamesii gen. et sp nov. and the Seeds of Several Bennettitalean Species

Creator:: Rothwell, Gar W. and Stockey, Ruth A.
Abstract:: A fossil seed cone with characters that have been hypothesized as transitional to the origin of crown group gnetophytes has been discovered in Lower Cretaceous deposits on Vancouver Island, British Columbia, Canada. This cone, described as Protoephedrites eamesii gen. et sp. nov., provides the first anatomically preserved fossil evidence for...
Resource Type:: Article

Senftenbergia oregonensis (Arnold) comb. nov. (Filicales): Delimiting Relationships Among Paleozoic Tedeleaceae

Creator:: Hillier, Kaitlin G. and Rothwell, Gar W.
Abstract:: Reexamination of fossilized plant material from the westernmost Pennsylvanian-age wetland flora in North America reveals that material of Pecopteris oregonensis Arnold represents a filicalean fern frond with annulate sporangia and anatomically preserved vascular tissues of the rachis. The frond, which is redescribed as Senftenbergia oregonensis (Arnold) Hillier et Rothwell comb....
Resource Type:: Article
Full Text:: Contributions to our knowledge of American Carboniferous floras. VI. Certain filicalean fructifications. Ann Mo

Hubbardiastrobus cunninghamioides gen. et sp. nov., Evidence for a Lower Cretaceous Diversification of Cunninghamioid Cupressaceae

Creator:: Atkinson, Brian A., Rothwell, Gar W., and Stockey, Ruth A.
Abstract:: PREMISE OF RESEARCH. The occurrence of six ovulate cones and six leafy branching systems, two of which show attachment of the ovulate cone, reveals a new cunninghamioid fossil conifer from the Cretaceous Apple Bay locality of Vancouver Island, Canada. This anatomically preserved plant expands our understanding of basal Cupressaceae in...
Resource Type:: Article

Pararaucaria carrii sp nov., anatomically preserved evidence for the conifer family cheirolepidiaceae in the northern hemisphere

Creator:: Stockey, Ruth A. and Rothwell, Gar W.
Abstract:: A cylindrical permineralized conifer seed cone has been identified from the Officer Member of the Trowbridge Formation, near Izee, in east-central Oregon. The cone is preserved in a Middle Jurassic (Callovian) marine calcium carbonate concretion, associated with araucarian seed cones, conifer twigs and wood, cycad seeds, fern rachides, and lycopodialean...
Resource Type:: Article
Full Text:: . Bull Brit Mus Nat Hist Lond Geol 2:97–137. Chamberlain CJ 1935 Gymnosperms, structure and evolution

Plant-Arthropod Interactions in Acanthostrobus edenensis (Cupressaceae), a New Conifer from the Upper Cretaceous of Vancouver Island, British Columbia

Creator:: Klymiuk, Ashley A, Stockey, Ruth A., and Rothwell, Gar W.
Abstract:: Premise of research. A new, morphologically distinct, anatomically preserved conifer assignable to the basal Cupressaceae, which was subject to arthropod infestation during life, has been discovered within a marine carbonate concretion from the Coniacian (Late Cretaceous) Eden Main locality of Vancouver Island, British Columbia. Methods. Specimens were studied from anatomical...
Resource Type:: Article

Cunninghamia beardii sp. nov.(Cupressaceae: Cunninghamioideae), Anatomically Preserved Pollen Cones from the Eocene of Vancouver Island, British Columbia, Canada

Creator:: Buczkowski, Emma L., Stockey, Ruth A., Atkinson, Brian A., and Rothwell, Gar W.
Abstract:: Premise of research. A large pollen cone cluster attached to a cunninghamioid twig and surrounded by leaves has been identified from Eocene calcium carbonate marine concretions from the Appian Way locality on Vancouver Island, British Columbia, Canada. The cluster preserves 18 cones but probably bore at least 24 pollen cones...
Resource Type:: Article
Full Text:: Roumanie. Bull Mens Soc Linn Lyon 41:83–85. Haggart JW, WA Hessin, A McGugan, DR Bowen, G Beard, R

Diversity of ancient conifers: The jurassic seed cone bancroftiastrobus digitata gen. et sp. nov. (coniferales)

Creator:: Rothwell, Gar W., Mapes, Gene, Stockey, Ruth A., and Hilton, Jason
Abstract:: Premise of research. A third genus of anatomically preserved conifer seed cones has been recognized from a Late Jurassic deposit in northeastern Scotland. This cone is described as Bancroftiastrobus digitata Rothwell, Mapes, Stockey et Hilton. Methodology. The cone was sectioned with the classic coal ball peel technique and studied and...
Resource Type:: Article
Full Text:: cellulose peel technique in palaeobotany. Ann Bot, NS, 20:635–637. Klymiuk A, RA Stockey, GW Rothwell 2011

ScholarsArchive@OSU

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Bisexual Flowers from the Coniacian (Late Cretaceous) of Vancouver Island, Canada: Ambiplatanus washingtonensis gen. et sp. nov. (Platanaceae)

A ranunculalean liana stem from the cretaceous of British Columbia, Canada: Atli morinii gen. et sp nov.

Evolution and Phylogeny of Gnetophytes: Evidence From the Anatomically Preserved Seed Cone Protoephedrites Eamesii gen. et sp nov. and the Seeds of Several Bennettitalean Species

Senftenbergia oregonensis (Arnold) comb. nov. (Filicales): Delimiting Relationships Among Paleozoic Tedeleaceae

Hubbardiastrobus cunninghamioides gen. et sp. nov., Evidence for a Lower Cretaceous Diversification of Cunninghamioid Cupressaceae

Pararaucaria carrii sp nov., anatomically preserved evidence for the conifer family cheirolepidiaceae in the northern hemisphere

Plant-Arthropod Interactions in Acanthostrobus edenensis (Cupressaceae), a New Conifer from the Upper Cretaceous of Vancouver Island, British Columbia

Cunninghamia beardii sp. nov.(Cupressaceae: Cunninghamioideae), Anatomically Preserved Pollen Cones from the Eocene of Vancouver Island, British Columbia, Canada

Diversity of ancient conifers: The jurassic seed cone bancroftiastrobus digitata gen. et sp. nov. (coniferales)

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