Sphenopteris
WebSphenopteris arizonica is a small, strongly polymorphic, tripinnate leaf that probably is bipartite. Each division of the leaf has falcate pinnules in the basal portion that grade … Web81 rows · Sphenopteris is a genus of seed ferns containing the foliage of various extinct …
Sphenopteris
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Web1. Sphenopteris (Pecopterid). Fronds with ultimate pinnae pinnately deeply lobed, the lobes connate to the middle or higher, the veins pinnately divided, as in Pecopteris. Some of the … WebSphenopteris Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom incertae sedis family Sphenopteridae genus Sphenopteris ...
Sphenopteris is a genus of seed ferns containing the foliage of various extinct plants, ranging from the Devonian to Late Cretaceous. One species, S. höninghausi, was transferred to the genus Crossotheca in 1911. See more The frond of Sphenopteris could be up to 20 inches (51 cm) long. See more In Brazil, fossil of form genus Sphenopteris was located in outcrop Morro Papalé in the city of Mariana Pimentel. They are in the geopark … See more • Jardin Botanico de Córdoba: Species tables See more WebDec 1, 2003 · Sphenopteris coemansiAndrae– neue, aussagefähige Funde Authors: R. Daber Abstract Im Ergebnis paläobotanischer Geländearbeit im Saarbecken wurden zwei Stücke von Sphenopteris coemansiAndrae...
WebMar 1, 2024 · Weiss (in Peck, 1879) established the species Sphenopteris germanica to include Gutbier's Sphenopteris dichotoma and newly collected material by R. Peck in Lower Silesia. In addition to a diagnosis in German, Weiss (in Peck, 1879 ) clearly stated that this was a new species; he did not illustrate any material but explicitly referred to the ... WebLagenostoma is a genus of seed ferns (Pteridospermatophyta), based on ovules preserved in coal balls from the Six Inch Coal of the Hough Hill Colliery near Stalybridge, England.Distinctive stalked glands enabled Oliver and Scott to attribute these seeds to fernlike foliage of Sphenopteris hoeningshauseni in the same coal balls. This was the first …
WebThe species Coniopteris laciniata and Sphenopteris wonnacottii are heterophyllous ferns recovered from two Spanish Barremian localities, Las Hoyas and El Montsec respectively. The similarities between these species, observed in a study of a total of 66 hand specimens from both localities, indicate that they are conspecific.
WebMay 1, 2024 · The leaves of most Sphenopteris species look pretty stiff and have strongly dissected pinnules with very narrow, linear rigid segments, apparently being an adaptation to arid conditions. The Tregiovo flora is of great importance, not only because of its richness and diversity, especially with regard to sphenopterids, but also because it is one ... smart as whip meaningWebApr 29, 2015 · The fern Sphenopteris constitutes one of the most common but also most misunderstood Per-mian ferns. During that time it was widespread across the Northern … smart as the devil meaningWebSep 1, 2014 · Sphenopsids Several horsetail fossils were found in the new flora and in the collection of Utrecht University. The dispersed hexagonal sporophyll heads that are 4–6 mm in diameter (PAL1395, Plate I, 1) may be referable to Equisetites Sternberg 1833. smart as paint treasure islandWebMar 1, 1983 · Sphenopteris polyphylla as depicted by Zeiller possesses penultimate pinnae bearing ulti- mate pinnae composed of six to eight round pinnules and an enlarged terminal. The venation is denser and the pinnae are larger than in E. neuro- pteroides. It appears that these two form species may be the extremes in range of one form taxon, and that the ... hill country windows \u0026 doorsWebThe small-pinnuled members of the genus Sphenopteris, Brongt., are, under the most favourable circumstances, from the delicate nature of their fronds, extremely difficult to … hill country windows and doors kerrville txWebSphenopteris arizonica is a small, strongly polymorphic, tripinnate leaf that probably is bipartite. Each division of the leaf has falcate pinnules in the basal portion that grade … smart as you psaWebPrior to the discovery of the connection between the stem and leaf, the leaf of Lyginopteris oldhamia was described as Sphenopteris hoeninghausii. As is clear from the impressions of Sphenopteris, the rachis was forked and had strong pinnae, which were again divided pinnately. The leaves were as long as 50 cm. smart as the lucks