Fossilman
Cave Dweller
Member since January 2009
Posts: 20,666
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Post by Fossilman on Jan 26, 2009 10:26:17 GMT -5
A couple more from my collection......This is a Orthoceras,from Morocco...... I dislike most fossils from there! They are a dime a dozen and are flooding the fossil market and bringing the price of fossils down! This is my first Nautilus I ever found.........Montana
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Saskrock
fully equipped rock polisher
Member since October 2007
Posts: 1,852
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Post by Saskrock on Jan 26, 2009 11:01:55 GMT -5
The Nautilus is awsome. You have a better collection than a lot of museums I think.
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Post by Lady B on Jan 26, 2009 23:54:05 GMT -5
Absolutely beautiful!!! Especially the Nautilus!
Lady B
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Post by frane on Jan 27, 2009 21:12:14 GMT -5
Really nice pieces! Fran
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Post by sandsman1 on Jan 28, 2009 23:07:08 GMT -5
maybe a dumb Q but we all know there is no such thing haha -- was that second one a kind of snail or what lived in it
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,666
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Post by Fossilman on Mar 5, 2009 8:36:24 GMT -5
maybe a dumb Q but we all know there is no such thing haha -- was that second one a kind of snail or what lived in it Description of Animal The Chambered nautilus is a mollusk, related to the octopus, squid, clam and snail. A nautilus, along with the cuttlefish, squid and octopus, are all cephalopods, meaning ‘head-foot,’ so named because the feet (tentacles) are attached to the head. The nautilus is the only cephalopod that has a fully developed shell for protection. Unlike a squid, cuttlefish or an octopus, the nautilus has poor vision and its primitive eyes have no lenses. The nautilus has more than ninety suckerless tentacles. Grooves and ridges on the tentacles are used to grip prey and deliver food to a crushing, parrot-like beak. Unlike snails, the spiraled shell of the nautilus is divided into chambers with the animal occupying the outermost chamber. A newly hatched nautilus begins life with about four chambers and develops an average of 30 chambers by adulthood. The inner chambers are filled with gas and help the nautilus to maintain neutral buoyancy. The nautilus adds liquid to the chambers in order to dive. A nautilus is considered to be a "living fossil" as they have undergone little change in over 400 million years. They dominated the ancient seas before the rise of fishes and appeared about 265 million years before the first dinosaurs. In prehistoric times there were about 10,000 different species of the nautilus, but only a few species survived to the present day.
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