First record of petrified Permian pecopterids from the Paraná Basin, Brazil (Corumbataí Formation, Passa Dois Group, northeastern State of São Paulo): Morphology, anatomy and paleoecological implications

Tavares, Tatiane Marinho Vieira; Rohn, Rosemarie

doi:10.1016/j.jsames.2008.09.001

Cited by 23 publications

(1 citation statement)

References 30 publications

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“…Reihman and Schabilion (1976) used silicone in Pennsylvanian fern-like foliage allowing the examination of papillate surfaces and stomata surrounded by papillae. Tavares and Rohn (2009) made silicone replicas of a petrified Permian pecopterid showing cells and probable trichome scars on the pinnules. Moisan et al (2011) prepared silicone replicas of cycadophytes for SEM examination, obtaining detailed images of epidermal cells and papillae of the plant surfaces.…”

Section: Previous Investigations Using Replicas and Semmentioning

confidence: 99%

The study of cuticular and epidermal features in fossil plant impressions using silicone replicas for scanning electron microscopy

Moisan

2012

Palaeontologia Electronica

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The study of epidermal and cuticular features is crucial in palaeobotanical investigations. In fossil plant impressions organic material is not preserved and cuticular data is commonly believed to be missing. This work describes a redefined version of the silicone cast technique for SEM examination known since almost 40 years, but unfortunately rarely used in routine palaeobotanical studies. The use of silicone (vinylpolysiloxane) instead latex casts offers significant advantages such as easier handling, higher reproduction of surface details, and elimination of electrostatic charge accumulation. The results indicate that silicone represents an improvement over latex. With this technique excellent results can be achieved, possibly making visible several plant surface structures, including epidermal cells, stomata, papillae, trichomes and striations on the rachis. Moreover, this technique demonstrates that impression fossils can provide similar useful data like those seen in compressed fossils. The effectiveness of this technique is demonstrated with several examples of fossil plants from the Triassic Madygen Lagerstätte. The application of this simple, non-destructive and extremely effective technique provides significant biological information on the cuticular and epidermal features in fossil plant impressions despite the absence of cuticles, to resolve taxonomic problems as well as to infer diverse ecological adaptations.

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Section: Previous Investigations Using Replicas and Semmentioning

confidence: 99%