Unpolished Fossil Lituites sp. (Sea Animal) - 4.2x1.4 cm

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Seller: Top-Rated Seller gaofudev ✉️ (43,845) 100%, Location: Hong Kong, HK, Ships to: WORLDWIDE, Item: 381870972114 Unpolished Fossil Lituites sp. (Sea Animal) - 4.2x1.4 cm.
Unpolished Fossil L i tuites sp. (Sea Animal) - 4.2x1.4 cm

Unpolished L i tuites sp.

A nice fossil specimen of unpolished  L i tuites sp. (family Lituitidae, order Tarphycerida) -sea animal from China. It is dated to middle Ordovician period(460 million years).

Specimen is from the mountainous area of western Hunan province of China (central region). 

It measures  4.2x1.4cm (1.65x0.55inch).

Matrix size is 4.2x1.4x1.3 cm.

Weight:  12.4 gram

Shipping cost:

Free shipping cost.

Goods will be sent by airmail from Hong Kong and it may take 12 -18 working days to arrive.

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L i tuites sp.

Phylum:

Mollusca

Class:

Cephalopoda

Subclass:

Nautiloidea

Order:

Tarphycerida

Family:

Lituitidae

Genus:

Lituites

Lituites , genus of extinct cephalopods (primitive animals related to the modern pearly nautilus) found as fossils in marine rocks of the Ordovician Period (the Ordovician Period lasted from about 488 million to 444 million years ago). The distinctive shell of Lituites is composed of serially arranged chambers. The shell begins with a tightly coiled portion that gradually straightens out after a few whorls; the anterior portion of the shell, the largest part, is straight in form and expands toward the front. The sutures between the chambers appear as simple lines around the shell.

Fossils have been found in USA ( New York ) , Argentina , Norway , Sweden , Estonia , and China (Hunan) .

Lituites produced a shell with a planospirally coiled juvenile portion at the apex, reflective of its tarphycerid ancestry, followed by a long, moderately expanding, generally straight, orthoconic adult section with a subdorsal siphuncle connecting the chambers. The adult body chamber may equal or exceed the length of the chambered part of the orthoconic section. The mature aperture has a pair of pronounced ventrolateral lappets and a similar but shorter pair of dorsolateral lappets.

Lituites gives its name to the term "lituiticone" which refers to a shell that is coiled in the early growth stage and later becomes uncoiled.

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  • Condition: New
  • Country of Manufacture: China

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