An annotated synopsis of paleozoic fossil spores : and the definition of generic groups /

Schopf, James M.; Wilson, L. R.; Bentall, Ray

doi:10.5962/bhl.title.61674

Cited by 129 publications

(94 citation statements)

References 4 publications

(17 reference statements)

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“…18); no contact areas (areae contagionis) were observed. If found in the dis persed condition spores of Weissia would be in cluded in the genus Calamospora as defined by SCHOPF, WILSON, and BENTALL (1944).…”

Section: Descriptionmentioning

confidence: 99%

Studies of Paleozoic Calamitean Cones: Weissia Kentuckiense Gen. et Sp. Nov.

Rothwell¹,

Taylor²

1971

Botanical Gazette

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The recent discovery of a new petrified fructification from the Lewis Creek coal ball locality in eastern Kentucky adds to our knowledge of the structure and diversity of c alamitean cones. The incomplete specimen measures 4.8 cm long and 6.0 mm in diameter, and is composed of alternating bract and sporangiophore whorls. Approximately 24 bracts are present in each whorl. Bracts arise at right angles to the axis and are fused into a shallow disk for 2.0 mm before arching distally and becoming free. Six sporangiophores arise obliquely from slightly above each bract disk; each sporangiophore bears two large pendant sporangia that are attached along their distal and tangential surfaces. Sporangia! walls are a single cell layer thick and are characterized by internal cell lumen partitions. The distal ends of the sporangiophores are fused to form a continuous ring of tissue that surrounds the sporangia. Features of the new cone are discussed in relation to those of other calamitean cones of s imilar age.

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Section: Descriptionmentioning

confidence: 99%

Studies of Paleozoic Calamitean Cones: Weissia Kentuckiense Gen. et Sp. Nov.

Rothwell¹,

Taylor²

1971

Botanical Gazette

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“…Smith 1962, Smith & Butterworth 1967, Somers et al 1972, Bek 2012. The genus was established by Schopf et al (1944) and emended by Potonié & Kremp (1954) and Somers et al (1972). The first records of Lycospora concern its in situ occurrences from mono-and bisporangiate cones of the Lepidostrobus and Flemingites-types (Hooker 1848, Carruthers 1865, Schimper 1870.…”

mentioning

confidence: 99%

Microspinosporites, a new genus of Palaeozoic pseudosaccate miospores of flemingitalean affinity

Bek¹

2013

Bull. Geosci.

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“…Raistrickia Schopf, Wilson & Bentall, 1944 Type species. Raistrickia grovensis Schopf, Wilson & Bentall, 1944. ?Raistrickia sp.…”

Section: Comparison Matonisporites Equiexinusmentioning

confidence: 99%

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina

Narváez¹,

Prámparo²,

García³

2014

Rev. bras. paleontol.

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-Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina). In the Brealito Member, aquatic species (mainly freshwater algae) dominate the palynofl ora, while terrestrial species are represented by trilete spores (mainly Anemiaceae) and gymnosperm pollen grains. In the Don Bartolo Member, Classopollis spp. dominate most of the assemblages, trilete Anemiaceae spores constitute half of the total counts in one of the assemblages and a unique angiosperm species (Tricolpites variabilis) was found in two assemblages. Ephedra-type pollen grains (three genera and six species) appear in both members, although in low abundance. The results support previous sedimentology studies that indicate a perennial lake environment at the time of deposition of the Brealito Member, with evidence for dry seasonality in the Don Bartolo Member. The inferred regional paleoclimate is subtropical with arid conditions. Considering the stratigraphic ranges of selected species and the sedimentology data, an Albian/Cenomanian age is suggested for the unit.

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An annotated synopsis of paleozoic fossil spores : and the definition of generic groups /

Cited by 129 publications

References 4 publications

Studies of Paleozoic Calamitean Cones: Weissia Kentuckiense Gen. et Sp. Nov.

Studies of Paleozoic Calamitean Cones: Weissia Kentuckiense Gen. et Sp. Nov.

Microspinosporites, a new genus of Palaeozoic pseudosaccate miospores of flemingitalean affinity

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina

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