|
|
|
|
|
|
Petrified Wood 1-1/2"
|
|
|
Petrified wood is an example of a fossil. This is where the organic material is replaced with minerals, usually agate.
|
|
|
|
|
|
|
|
|
|
Fulgurite - Fossilized Lightning 1"
|
|
|
Sand (silicon dioxide) melts at 1,605 degrees C (3,002 degrees F), but the temperature in a bolt of lightning can reach 30,000 Kelvin.
When lightning strikes sand the particles can melt and fuse together in less than a second. If conditions are right, the fused sand can take on the form of the lightning bolt. Because the shapes of fulgurite specimens relect the paths of the lightning bolts as they are dispersed into the ground, fulgurite is sometimes called 'fossilized lightning'.
The name fulgurite comes from th Latin word fulgur which means 'lightning flash' or "thunderbolt." Although lightning strikes earth at least a million times a day, only rarely does fulgurite form. Origin: Sahara Desert, Africa.
Email a question about this item
|
|
|
|
|
|
|
|
|
|
Small Orthoceras Fossil 2-3"
|
|
|
One of the first cephalopods with an elongate, chambered shell was the orthoceras. Paleontologists estimate the beginning of their existence at about 505-523 million years ago. The primitive, elongate shell of the orthoceras was not as manageable or functional as later developed, coiled shells of cephelapods and gastropods. This is undoubtedly one of the main reasons the orthoceras soon became extinct.
Cephelopods are a class of mollusks best known for their many arms and tentacles. The elongate, partitioned shell of the orthoceras served mainly as protection and support. As the orthoceras grew, it formed more partitions in its shell.
Origin: Northern Africa. Fossil measures 2-3" (sometimes longer) on its longest side. Price is per orthocras fossil.
Email a question about this item
|
|
|
|
|
|
|
|
|
|
Trilobite Fossil in Matrix
|
|
|
Trilobites are hard-shelled, segmented orthopods that existed over 300
million years ago in the Earth's ancient seas. Trilobites are second in
fame only to the dinosaurs. They range in size from the smallest being
less than 1cm and the largest more than 70cm long. They lived in marine
waters but not all trilobites could swim, some trilobites actually
burrowed under the seas or crawled on the muddy sea floors.
|
|
|
|
|
|
|
|
|
|
Orthoceras Fossil 3-4"
|
|
|
Orthoceras Fossils date back 400 million years. They formed out of a
squid-like cepehlapod. These fossils are 3-4" in length and about
1-1-1/2" in width.
|
|
|
|
|
|
|
|
|
|
Fossil Collection on Card
|
|
|
Collection of 8 small fossil samples on a card. Fossils cover paleozoic, mesozoic, and cenozoic eras.
|
|
|
|
|
|
|
|
|
|
Dinosaur Bone In Box
|
|
|
Genuine Dinosaur Bone!
Imagine a world of Giant Carnivores. Pteranadon soaring though the air, Herbivores reaching several stories high, Diplodocus up to 90 feet in length.
|
|
|
|
|
|
|
|
|
|
Trilobite Fossil
|
|
|
Trilobites were the first complex creatures to possess a hardened
exoskeleton. During the Cambrian period which began some 570 million
years ago and estimated 10,000 species of trilobites existed. At the end
of the Paleozoic Era about 220 million years ago, trilobites became
extinct. These Trilobite fossils are from the Phacops Genus and are
found in Northern Africa. They are typically 2-3" long.
|
|
|
|
|
|
|
|
|
|
Prehistoric Fossil Kit
|
|
|
This is a set of 12 different fossils from 6 different geological time zones: 150 to 550 million years ago. Each one is individually packaged complete with the description of the fossil, when it lived, where it was found and other interesting facts.
|
|
|
|
