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Ammonites are an extinct group of marine animals of the subclass Ammonoidea in the class Cephalopoda, phylum Mollusca. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods. Ammonites' closest living relative is probably not the modern Nautilus (which they outwardly resemble), but rather the subclass Coleoidea (octopus, squid, and cuttlefish). Their fossil shells usually take the form of planispirals, although there were some helically-spiraled and non-spiraled forms (known as "heteromorphs"). Their spiral shape begot their name, as their fossilized shells somewhat resemble tightly-coiled rams' horns. Plinius the Elder (died 79 A.D. near Pompeii) called fossils of these animals ammonis cornua("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns
see http://en.wikipedia.org/wiki/Ammonite
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Is Ammonites a trace fossil or a body fossil?
If not specified as trace fossil of Ammonites, it should be a body fossil. Ammonites is the name of the creature.
Extinct marine molluscs with coiled partitioned shells?
I believe it is called a nautilaus Ammonites are extinct. Nautilus are still alive. Both are cephalopods with coiled, partitioned shells.
What is an index fossil of the mesozoic era?
ammonites hopes this is what u wanted
Educate me about ammonites found in desert areas of Baja Calif Mexico?
Ammonites existed in worldwide oceans from 400 to 65.5 million years ago. During that entire period, Baja California was mostly or completely underwater. Ammonites are mollusks that have an appearance very similar to that of nautiloids, which still exist today, but they are more closely related to octopi.
Why does ammonite come before trilobites?
That's how they evolved, ammonites first, trilobites later. The sequence of evolution is the product of a very large number of essentially accidental and unpredictable events.
Do ammonites live in today's seas?
ammonites are extinct
What are ammonites named for?
Ammonites are named for the Egyptian god Ammon, who had a ram's head. The shells of ammonites are spirals like the horns of a ram.
What were predators of ammonites?
Various aquatic reptiles were predators of ammonites. Fossils of damaged ammonites have been found with teeth marks from Plesiosaurs.
Is Ammonites a trace fossil or a body fossil?
If not specified as trace fossil of Ammonites, it should be a body fossil. Ammonites is the name of the creature.
Who are the ammonites?
Squid
What did ammonites eat?
plankton
Are the Japanese the ammonites?
yes
What period in which the last ammonites became extinct?
Ammonites went extinct at the end of the Cretaceous Period.
Where was ammonites dominant?
Ammonites are very common fossils from the Jurassic Period. They were dominant in the ocean during and before the Jurassic Period.
When did ammonites become extinct?
Ammonites went extinct at the same time as the dinosaurs, about sixty-five million years ago.
What is a ammonite fossil called?
Ammonites are the most widely-known and abundant fossils in the world. The name "ammonites" came from the Greek god Ammon. Ammonites include squid, octopus, snails, cuttlefish, and nautilus.
Which king defeated the ammonites?
David
