Morphological and chemical examination of Courvoisiella ctenomorpha gen. and sp. nov., a siphonous alga from the upper devonian, West Virginia, U.S.A.

Niklas, Karl J.

doi:10.1016/0034-6667(76)90048-8

Cited by 13 publications

(2 citation statements)

References 23 publications

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“…The algal flora described by Gruss (1928) from the Devonian of Germany includes ulotrichalean forms but, as has been pointed out by Fairchild et al (1973), these filaments may be modern contaminants since they were found in macerates rather than in thin sections. The siphonaceous Courvoisiella described by Niklas ( 1976) was apparently epiphytic on Archaeopteris but no siphonacous or epiphytic forms have been found in the chert.…”

Section: Discussionmentioning

confidence: 96%

Algae from the Rhynie Chert

Edwards

Lyon

1983

Botanical Journal of the Linnean Society

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New material collected from the Rhynie Chert Bed (Siegenian age) has revealed new filamentous and unicellular algae. Two of the filamentous forms and one palmelloid form are described. Filamentous and unicellular algae are particularly common in a white kind of chert not previously reported and which is interpreted as having been formed by the in situ silicification of a silicate‐rich pond. Some rhizoid‐nodes of Palaeonitella cranii (Kidston & Lang) Pia and a possible rhizoid‐borne pro‐embryo are also described and compared with similar structures in living Charophyta.

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Section: Discussionmentioning

confidence: 96%

Algae from the Rhynie Chert

Edwards

Lyon

1983

Botanical Journal of the Linnean Society

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“…An occasional anoxic episode in the pond may have killed off schools of these fi sh, ultimately leading to their incorporation into the fossil record. Supporting evidence for general oxygenating conditions in the pond water itself is the discovery of the green alga Courvoisiella ctenomorpha Niklas in a hydrofl uoric acid maceration of the plant layer dark-gray siltstone (Niklas, 1976;Pat Gensel, 1998, personal commun. ).…”

Section: Differential Preservationmentioning

confidence: 99%

Plant paleoecology of the Late Devonian Red Hill locality, north-central Pennsylvania, an <italic>Archaeopteris</italic>-dominated wetland plant community and early tetrapod site

Cressler¹

2006

Wetlands Through Time

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The Late Devonian Red Hill locality in north-central Pennsylvania contains an Archaeopteris-dominated plant fossil assemblage, a diverse fossil fauna, and an extensive sedimentary sequence ideal for investigating the landscapes and biotic associations of the earliest forest ecosystems. Sedimentological analysis of the main plantfossil bearing layer at Red Hill indicates that it was a fl ood-plain pond. A seasonal wet-and-dry climate is indicated by well-developed paleovertisols. The presence of charcoal interspersed with plant fossils indicates that fi res occurred in this landscape. Fires appear to have primarily affected the fern Rhacophyton. The specifi city of the fi res, the distribution profi le of the plant remains deposited in the pond, and additional taphonomic evidence all support a model of niche partitioning of the Late Devonian landscape by plants at a high taxonomic level. At Red Hill, Archaeopteris was growing on the well-drained areas; Rhacophyton was growing in widespread monotypic stands; cormose lycopsids grew along the pond edge; and gymnosperms and Gillespiea were possibly opportunists following disturbances. Tetrapod fossils have been described from Red Hill-therefore, this paleoecological analysis is the fi rst systematic interpretation of a specifi c site that refl ects the type of wetland environment within which the earliest tetrapods evolved.

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