Annularia Calamites Cross-Section Replica

$58.00

Prehistoric plants of North America fossils of this genus have been discovered in the Permian strata of Russia and in the Carboniferous (around 360 to 300 million years ago) strata of the United States, Canada, China and Europe.

Description

Annularia Calamites Cross-Section Replica measures 3.1 inches. Annularia Calamites Cross-Section Replica is museum quality polyurethane cast. Made in USA. Annularia is a form taxon. It is the name given to Calamites leaves. Our precise plant fossils can be used as a teaching tool for Paleobotany, museum exhibits, home décor or office décor.

Annularia is a form taxon name given to leaves of Calamites. In that species, the leaves formed radiating leaf whorls at each stem node, in a similar way to the branches of Equisetum, an extant genus of horsetails.

Annularia leaves are arranged in whorls of between 8-13 leaves. The leaf shape is quite variable, being oval in Annularia sphenophylloides and linear to lanceolate in Annularia radiata, but they are always flat and of varying lengths.

Calamites were arborescent and grew to a height of 32 feet (9.8 meters).

Prehistoric plants of North America fossils of this genus have been discovered in the Permian strata of Russia and in the Carboniferous (around 360 to 300 million years ago) strata of the United States, Canada, China and Europe.

The stems and the radiating structures of the leaf whorls is similar in the Calamites, an extinct genus of horsetails. Fossils of this genus have been discovered in the Permian strata of Russia and in the Carboniferous (around 360 to 300 million years ago) strata of the United States, Canada, China and Europe. Pennsylvanian. Mazon Creek, Illinois.

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Additional information

Weight 4 lbs
Dimensions 3.1 in
Annularia Calamites Facts:

Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Subclass: Equisetidae
Order: Equisetales
Family: †Calamitaceae
Genus: †Annularia