Museum very rare plant fossil lycopod genus Sublepidophloios lepidodendroides

Description: My specimens are genuine and will be delivered with a Certificate of authenticity, age and origin and scientific works copy described this species ! I combine shipping costs. Each item is different, so please wait with payment after purchase - I will send You a combine invoice. Usually, it will be cost of shipping the heaviest item. Specimen: Museun quality, big detailed specimen of rare Sublepidophloios lepidodendroides STERZEL 1907 " scale tree " lycopod bark Locality: All detailed and accurate data will be provided with the specimen Stratigraphy: Upper Carboniferous – Lower Carboniferous, Mississipian – Serpukhovian - Namurian A Age: ca. 330 Mya Matrix dimensions: ca. 20,0 x 11,0 x 4,5 cm ( scale-bar white square on pictures is 1,0 x 1,0 cm ) Description: Sublepidophloios Sterzel is a genus of Carboniferous lepidodendroid stems that has some intermediate characters be tween the very much more common genera Lepidodendron Sternberg and Lepidophloios Sternberg. All three genera con tain species with swollen leaf bases (leaf cushions) that have leaf scars marking the former attachment points of their lam inae. Lepidodendron contains species with isodiametric to elongated leaf cushions with more or less centrally positioned leaf scars. Lepidophloios species have mature cushions that bulge outward and downward to such an extent that they con ceal the lower surfaces of the cushions. This deflection results in their leaf scars appearing as though they are at the bottom of the leaf cushions. Occasionally some Lepidophloios stems have been figured upside down, with their leaf scars at the top, in the mis taken belief that they belong to Lepidodendron (Thomas 1977). Sterzel’s illustrations (Sterzel 1907, pl. lxi) show that the leaf cushions in his new genus and species Sublepidophloios hagenbachensis have the overall elongated shape of Lepidodendron but that their central portions, bearing the leaf scars, bulge outward and slightly downward. Sterzel’s second species, Sublepidophloios lepidodendroides, is equally convincing, with its leaf cushions bulging outward but only partially downward. Potonie´ (1899) accepted Sterzel’s generic interpretation and refigured the specimens. Crookall (1964), however, included Sterzel’s species as a doubtful synonym of Lepidophloios laricinus Sternberg. Lycopods (also known as the "Scale tree") is an extinct genus of primitive, vascular, arborescent (tree-like) plant related to the Lycopsids (club mosses). It was part of the coal forest flora. They sometimes reached heights of over 30 metres (100 ft), and the trunks were often over 1 m (3.3 ft) in diameter, and thrived during the Carboniferous period. Sometimes called "giant club mosses", this is actually not correct as they are actually closer to quillworts than to club mosses. The closely packed diamond-shaped leaf scars left on the trunk and stems as the plant grew provide some of the most interesting and common fossils in Carboniferous shales and accompanying coal deposits. These fossils look much like tire tracks or alligator skin. The scars, or leaf cushions, were composed of green photosynthetic tissue, evidenced by the cuticle covering and being dotted with stomata, microscopic pores through which carbon dioxide from the air diffuses into plants. Likewise, the trunks of Lepidodendron would have been green, unlike modern trees which have scaly, non-photosynthetic brown or gray bark. Lepidodendron has been likened to a giant herb. The trunks produced very little, if any, wood. Most structural support came from a thick, bark-like region. This region remained around the trunk as a rigid layer that did not flake off like that of most modern trees. As the tree grew, the leaf cushions expanded to accommodate the increasing width of the trunk. The branches of this plant ended in cone-like structures. Lepidodendron did not produce seeds like many modern plants. Instead, it reproduced by means of spores. It is estimated that these plants grew rapidly and lived 10–15 years. Some species were probably monocarpic, meaning they reproduced only once toward the end of their life cycle. Lepidodendron likely lived in the wettest parts of the coal swamps that existed during the Carboniferous period. They grew in dense stands, likely having as many as 1000 to 2000 giant clubmosses per hectare. This would have been possible because they did not branch until fully grown, and would have spent much of their lives as unbranched poles. In its juvenile stages, the trunk was supported by grass-like leaves that grew straight out of the trunk. By the Mesozoic era, the giant clubmosses had died out and were replaced by smaller clubmosses, probably due to competition from the emerging woody gymnosperms and other plants. Lepidodendron is one of the more common plant fossils found in Pennsylvanian (Late Carboniferous) age rocks. They are closely related to other extinct genera, Sigillaria and Lepidendropsis. In the 19th Century, due to the reptilian look of the diamond-shaped leaf scar pattern, petrified trunks of Lepidodendron were exhibited at fairgrounds as giant fossil lizards or snakes. The name Lepidodendron comes from the Greek lepido, scale, and dendron, tree. Systematic: Division: Tracheophyta (Lycoposida) Class: Lycopodinae Order: Lycophodiales Family: Lepidodendraceae Genus: Sublepidophloios Species: Sublepidophloios lepidodendroides STERZCEL 1907

Price: 78 USD

Location: Sosnowiec

End Time: 2024-03-06T16:47:17.000Z

Shipping Cost: 18 USD