upper carboniferous

Listing 1 - 10 from 17 for upper carboniferous

Valloisella lievensis, a limulus-like animal from the Upper Carboniferous
... Valloisella lievensis, a limulus-like animal from the Upper Carboniferous Back Valloisella lievinensis from Liévin (Pas de Calais, France). This fossil has been classified in ...
www.xs4all.nl/~steurh

Climate during the Carboniferous Period
... Northern China were primarily deposited during the Upper Carboniferous Period, attesting to the fact that even in the cold, icehouse climate of the Carboniferous Period lush vegetation still persisted in ... coal deposits of the Late Carboniferous. Coal Beds of the Carboniferous Period: How the World Looked when they were Deposited COAL During the Upper Carboniferous Period (a.k.a. Pennsylvanian ...
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Outer and inner stem of Cordaites
... some of the highest wood mass and density among the various tree fossils of the Upper Carboniferous (Pennsylvanian) Period. Rock Type: Siltstone Formation: Kanawha Interval: Eagle seam Age: Middle Pennsylvanian Period, approx ...
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Lab X - Anthophytes, Glossopterids and Others (2)
... Paleozoic seed plants. Callistophyton, reported from the Pennsylvanian of the United States and the Upper Carboniferous of France, is reconstructed as a small shrub or vine because of its slender ... edge of a substantial pith. The primary xylem is mesarch (Middle Pennsylvanian) or exarch (Upper Pennsylvanian). A bifacial vascular cambium forming manoxylic secondary wood is also present. Fronds up ...
www.ucmp.berkeley.edu

The Carboniferous
... of the Lower Carboniferous can be easilydistinguished from that of the Upper Carboniferous. The environment of the Lower Carboniferous in North ... Carboniferous. Subdivisions of the Carboniferous: The chart at left shows the major subdivisions of the Carboniferous Period.The Lower Carboniferous of Europe corresponds roughly to the Mississippian of North America, and the Middle and Upper Carboniferous ...
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Sphenophytess
... standing in whorls. Fructifications typically consist of strobili. Sphenophytes were widespread in the Carboniferous and Early Permian. Two major groups can be distinguished, the Calamitales and the ... growth habit. The various Sphenophyllum foliage species are valuable index fossils for the Upper Carboniferous and Lower Permian. Sphenophyllum angustifolium M. Hieb's Plant Fossils of West Virginia ...
www.uni-muenster.de

The evolution of plants: II Carboniferous and Early Permian
... Lower Carboniferous are not common. There are some places in Scotland where they can be found, like along the coast near Edinburgh (click photo on the right). In the Upper Carboniferous, however, a wealth of plant fossils occur near the coal seams. Why this difference between the Lower and the Upper Carboniferous? The reason is that during the Late Carboniferous very ...
www.xs4all.nl/~steurh

Mosses and Liverworts in Wales: Rocks
... colour, its leaves are long and tapering to fine points, with toothed margins in the upper part. Its capsules are globose and highly symmetrical. It is closely related to the much ... is the commonest rock species of Orthotrichum and grows on base-rich rocks (such as Carboniferous limestone) and artificial walls, buttresses etc., usually in exposed situations. It forms neat dark-green ...
home.clara.net

Azolla and Anaebaena Symbiosis
... crevices. Fossil evidence indicates that many additional species of ferns flourished on earth during the Carboniferous period, some 300 million years ago. But of all the great diversity of ferns, relatively ... algae. Several water fern plants (Azolla filiculoides) floating on the water surface. The plant in upper right with oval fronds is a duckweed (Lemna minuta). The minute plants which resemble ...
waynesword.palomar.edu

Late Carboniferous cuticles (photographs)
Late Carboniferous cuticles (photographs) Leaf cuticle of Lescuropteris genuina, a pteridosperm from the Upper Stephanian of Central France Upper leaf surface of Alethopteris zeilleri from the Upper Stephanian of Central France. The structure in the centre is a hair base. Research Palaeobotany homepage Geol.-Palaeontol. Institute
www.uni-muenster.de

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