A chemical extraction technique for the recovery of silicified plant remains from ironstones

Aulenback, Kevin R.; Braman, Dennis R.

doi:10.1016/0034-6667(91)90075-e

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…Although not part of their official job responsibilities, several of the museum's palaeontological technicians have undertaken solo or collaborative research projects (e.g., Aulenback and Braman 1991;Coy 1995;Aulenback and LePage 1998;Tanke and Carpenter 2001;Currie et al 2008aCurrie et al , 2008bHenderson and Tanke 2010;Kubo et al 2012;. Darren Tanke, currently the longest serving RTMP technician, possesses a detailed knowledge about the history of palaeontological fieldwork and discoveries in Alberta (e.g., Tanke 2005Tanke , 2006Tanke , 2008Tanke , 2010aTanke , 2010b) that many researchers have tapped into while doing background work for projects.…”

Section: One Big Happy Family: Support Students and Other Researchementioning

confidence: 99%

“…Also notable is the discovery of an ironstone-hosted plant locality in the late 1980s by then-RTMP technician Kevin Aulenback, just east of the museum and within the upper Campanian portion of the Horseshoe Canyon Formation. Kevin developed an acid bath technique (Aulenback and Braman 1991) that permitted the recovery of hundreds of silicified, three-dimensionally preserved plant fossils, such as stems and cones (e.g., McIver and Aulenback 1994;Aulenback and LePage 1998;Bogner et al 2005;Aulenback 2009). …”

Section: Discovery Documentation Excavation and Interpretation Of mentioning

confidence: 99%

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Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions

2015

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Section: One Big Happy Family: Support Students and Other Researchementioning

confidence: 99%

Section: Discovery Documentation Excavation and Interpretation Of mentioning

confidence: 99%

Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions

2015

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“…Remains of other plants recovered from the nodules incidentally included the following: Sequoia-like pollen cones, seed cones, and leaves; Cunninghamia-like seed cones and leaves; Torreya-like leaves; Elatocladus Halle; Fokieniopsis (Bell) McIver & Basinger; leaves of Trochodendroides Berry; the aquatic angiosperm Trapago angulata (Newberry) McIver & Basinger; numerous seeds and fruits, including Nyssidium arcticum (Heer) Iljinskaja and Catpites verrucosus Newberry; and thalli of a liverwort of the Jungermanniales (Aulenback and Braman 1991;Serbet and Stockey 1991;unpublished data).…”

Section: Introductionmentioning

confidence: 99%

Morphology and relationships of Mesocyparis umbonata sp.nov.: fossil Cupressaceae from the Late Cretaceous of Alberta, Canada

McIver¹,

Aulenback²

1994

Can. J. Bot.

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Late Cretaceous silicified Cupressaceae remains, recently recovered from the Horseshoe Canyon Formation of Alberta, Canada, include three-dimensional leafy twigs of the Cupressinocladus interruptus type with attached seed cones, seeds, pollen cones, pollen, and woody stems. The abundance and excellent preservation of the remains allows detailed description of most aspects of the plant, including foliage, reproductive organs, epidermal features, and wood. Foliage of the fossil is frondlike and flattened, with an opposite, less commonly alternate, branching pattern. Seed cones, borne in decussate pairs, are globose, woody, about 4.0 mm in diameter, and bear four approximately equal-sized cone scales with small umbos near the scale center. Each seed has two broad, semicircular wings. Pollen cones are typical for the Cupressaceae; pollen grains are structurally comparable, but small, for the family. Fertile branches and seed cones are not identical to any extant member of the Cupressaceae, but they are sufficiently similar to those of the Paleocene cedar Mesocyparis borealis from Western Canada to be referred to that genus. Dissimilarities justify assignment to Mesocyparis umbonata sp.nov. Seed cone structure of Mesocyparis umbonata resembles most closely that of the northern hemispheric taxon Chamaecyparis nootkatensis; the leaves resemble those of Thuja and Chamaecyparis. Other features, including the number of seed cone scales, branching pattern, and wood anatomy, are more comparable to those of taxa of the southern hemispheric Libocedreae. New information, based on these remains, indicates that the relationship between some northern and southern hemispheric taxa is closer than previously proposed, supporting the premise that present systems of classification separating these taxa do not reflect phylogeny. Key words: Cupressaceae, Mesocyparis, Late Cretaceous, fossil, seed cones, evolution, phylogeny.

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Prospective Lithologies, Techniques and Chances for Microscopic Paleontology at the Vendian/Cambrian Boundary

Braun

2004

Gondwana Research

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A chemical extraction technique for the recovery of silicified plant remains from ironstones

Cited by 10 publications

References 2 publications

Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions

Introduction to the Special Issue commemorating the 30th anniversary of the Royal Tyrrell Museum of Palaeontology, with a summary of the museum’s early history and its research contributions

Morphology and relationships of Mesocyparis umbonata sp.nov.: fossil Cupressaceae from the Late Cretaceous of Alberta, Canada

Prospective Lithologies, Techniques and Chances for Microscopic Paleontology at the Vendian/Cambrian Boundary

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