Calamites fossil plant rare set 5 species horsetails in nodules Not Mazon Creek for Sale

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Calamites fossil plant rare set 5 species horsetails in nodules Not Mazon Creek For Sale

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Calamites fossil plant rare set 5 species horsetails in nodules Not Mazon Creek:
$39.00

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: Nice Calamites fossil plant set - 5 species ( some rare )preserved in siderite nodules

1.Diplocalamites paleaceusSTUR

2.Stylocalamites cistiBRONGNIART

3.Mesocalamites cistiiformis STUR

4.Diplocalamites rugosusGOTHAN

5.Mesocalamites roemeriGOPPERT

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

Stratigraphy: Upper Carboniferous - Pennsylvanian / Westphalian A, Załęże beds

Age: ca. 314 Mya

Nodule dimensions:white square on pictures is 1,0 x 1,0 cm )

Description:

Specimen: Nice Calamites fossil plants set - 5 species( some rare ) preserved in siderite nodules from Europe !

1.Diplocalamites paleaceusSTUR

2.Stylocalamites cistiBRONGNIART

3.Mesocalamites cistiiformisSTUR

4.Diplocalamites rugosusGOTHAN

5.Mesocalamites roemeriGOPPERT

Calamitesis a genus of extinct arborescent (tree-like) horsetails to which the modern horsetails (genusEquisetum) 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 ofCalamiteshad 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 ofCalamiteswasunifacial, 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 ofCalamitesstems are so common as fossils.

Systematic:

Phylum:Tracheophyta

Class: Equisetinae

Order: Calamitales

Genus: Mesocalamites , Diplocalamites , Stylocalamites