Rare fossil plant 3D Calamitina Carboniferous equisetopsid extinct horsetail for Sale

Rare fossil plant 3D Calamitina Carboniferous equisetopsid extinct horsetail For Sale

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Rare fossil plant 3D Calamitina Carboniferous equisetopsid extinct horsetail:
$49.00

My specimens are genuine and will be delivered with a "Certificate of authenticity, age and origin" and scientific papers allowing plant identification !!!

I combine shipping costs. Each item is different, sopleasewait with payment after purchase-I will send You a combine invoice. Usually, it will be cost of shipping the heaviest item.

Specimen: Very rare fossil plant - 3D preserved equisetopsid extinct horsetailCalamitna goepperti( VON ETTINGSHAUSEN ) WEISS

Locality:All detailed and accurate data will be provided with the specimen

Stratigraphy:Upper Carboniferous -Middle Pennsylvanian / Westphalian B

Age: ca. 310 Mya

Matrixdimensions:ca. 13,0 x 6,5 x 6,0 cm ( white square on pictures is 1,0 x 1,0 cm )

Description:

Very rare fossil plant - 3D preserved equisetopsid extinct horsetailCalamitna goepperti( VON ETTINGSHAUSEN ) WEISS- First I saw !

Calamitinais a genus of extinct arborescent (tree-like) horsetails to which the modern horsetails (genus Equisetum) are closely related. Unlike their herbaceous modern cousins, these plants were medium-sized trees, growing to heights of more than 30 meters (100feet). They were components of the understories of coal swamps of the Carboniferous period. The trunks of Calamitinahad a distinctive segmented, bamboo-like appearance and vertical ribbing. The branches, leaves and cones were all borne in whorls. The leaves were needle-shaped, with up to 25 per whorl.Their trunks produced secondary xylem, meaning they were made of wood. The vascular cambium of Calamiteswas unifacial, producing secondary xylem towards the stem center, but not secondary phloem.The stems of modern horsetails are typically hollow or contain numerous elongated air-filled sacs. Calamiteswas similar in that its trunk and stems were hollow, like wooden tubes. When these trunks buckled and broke, they could fill with sediment. This is the reason pith casts of the inside of Calamitesstems are so common as fossils.

Systematic:

Division: Pteridophyta (Lycoposida)

Class: Equisetopsia

Order: Equisetales

Family: Calamitaceae

Genus: Calamitina Weiss

Species:Calamitna goepperti ( VON ETTINGSHAUSEN ) WEISS