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Orthoceras fossil rock

Fossil iinbedded in rock is fascinating; I remember looking at all the fossils in the stone floor in my old school; In perspective, all the small obsticals in every day life not that big after all. This little being swimmed the earth in the very beginning. Now it is preserved for our enjoyment, to love and cherish.

 

Size: 11x30x6 mm

In stock:  1

Origin: Africa

 

Price:  USd 11.20

Orthoceras ("straight horn") is a genus of extinct nautiloid cephalopod. Orthoceras fossils are common and have a global distribution, occurring in any marine rock, especially in limestone. These are slender, elongate shells with the middle of the body chamber transversely constricted, and a subcentral orthochoanitic siphuncle. The surface is ornamented by a network of fine lirae. Occasionally the chambers of the fossil shells are colored differently. The ground water minerals that percolated the strata during diagenesis determines the color. Greens and browns are most common. Orthoceras grew to a length of 15 centimeters (6 inches) and fed upon small animals. Orthoceras and related orthoconic nautiloid cephalopods are often confused with the superficially similar Baculites and related Cretaceous orthoconic ammonoids. Both are long and tubular in form, and both are common items for sale in rock shops (often under each other's names). Both lineages evidently evolved the tubular form independently of one another, and at different times in earth history.

The Baltic island of Öland off the southern coast of Sweden has many quarries that yield orthocone nautiloids of great beauty. For centuries Öland has supplied greater Europe with material for floors, stairs and grave stones. This hard limestone is durable and the fossil inclusions make it very desirable.

 

Fossils is organic material is converted into a fossil through the replacement of the original material and the filling of the original pore spaces with minerals. Petrified wood is a common result of this process, but all organisms, from bacteria to vertebrates, can be petrified. Petrification takes place through a combination of two similar processes: permineralization and replacement. These processes create replicas of the original specimen that are similar down to the microscopic level, and require a minimum of about 10,000 years to take place. Not only are the fossils produced through the process of petrification used for paleontological study, but they have also been used as both decorative and jewellry pieces. Especially shell and coral fossils is used in jewellry.

Fossil stones remind us of our past and helps us to accept who we are. It also have a positive effect in business.

 

 

 

 

 

 

 

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Latest update: 28 augusti 2015