The word "Fossil" is from ancient Latin, meaning "having been dug up". This however would be considered an extremely loose translation. In regard to organic material that has gone through a natural cellular replacement process, many insist that technically a fossil must be at least 10,000 years old. However other "fossilized" specimens which have not yet turned completely into stone but are partially fossilized are still considered to be fossils by many. Regardless, a fossil, no matter how well preserved is a very rare occurrence, as the conditions for its creation must be just right for its permineralization / replacement process to occur. A specimen upon its demise must be immediately buried in order to prevent rapid decomposition. Also, the specimen must be close to a mineral rich water source which over time slowly allows the organic cellular structure of the specimen to be replaced with minerals, molecule by molecule.
Here you can peruse fossil specimens from many different Geological time periods. We hand select and guarantee all of our specimens. Please contact us for any questions you might have, or simply give us a call. 847-866-7374
Out of stockRarely do these type of mortality specimens come on the market. We've been in possession of this item for many years, however we've just recently decided to offer it for purchase here at Dave's online. Although not as distinct as some much younger fish fossil specimens (ie- green river formation fish), the rarity of this piece is beyond comparison. Dimensions: ~ 21" x 14-1/2"" (total slab) Specimen's Dimensions: 12-1/2" long Location: China Age: Early Silurian / ~ 420 myo Learn More
Out of stock
These trilobite specimens have a unique crest along there head that is unique to the species. We will make sure to pick the best available specimen for you.
Measures: Matrix: 2.5"-3" , Trilobite: 1"-1.5"
Time Period: Devonian 395 Million Years AgoLearn More
This Carcharodontosaurus specimen displays excellent enamel retention. The color of the enamel is a very warm and attractive intermix of brown tones. The serrations of the specimen are very clean. And, the tip is unrepaired and pristine.
Measurements: 1-3/4" Long x 1" Wide x 1/2" Thick Location: Morocco, North Africa Time Period: Cretaceous ~90 myoLearn More
Out of stockThis nicely preserved specimen is un-restored and un-repaired. It displays very good enamel retention and the serrations are very distinct. The permineralization process has given the tooth a milk chocolate color, and the intact root extension is a lighter creamy brown. This Tyrannosaurus-rex tooth would be an excellent addition to anyone's collection. Measurements: ~ 1-7/8" long (including root) x 14/16" wide x 7/16" thick Location: Lance Formation, Lusk, Wyoming, USA Time period: Cretaceous Learn More
This Tyrannosaurus rex premaxillary tooth would have been located on the bottom jaw towards the front of the mouth. This specimen has a double serration going up the back of the tooth. The tip is in excellent shape with no sign of restoration work.
Measures: 1-1/4" Long x 1/2" Wide x 1/8" Thick
Location: Hell Creek Formation, Powder River County, Montana (Found Summer 2013)
Time Period: Cretaceous 65-68 Million Years OldLearn More
Out of stock
This fossil plate has two finely detailed Asteroidea and Brittle starfish specimens. Their natural positioning on the matrix bed lends for an aesthetically pleasing composition. An excellent piece for any collector, or designer.
Overall Measurement: ~10-1/4" High x 8-1/2" Wide x 1/4" Deep Location: Morocco, North Africa Time Period:Ordovician 488 - 433 MYO Learn More
This museum quality species of Goedelli fish is exceptionally rare and a fine example of both a positive and negative imprint. Specimens that are found in this part of the world many times retain great detail, and this particular specimen is no exception, displaying fine detail throughout.Measures: Plates: ~12" Tall x 9" Wide , Specimens: ~5-1/2" Wide x 6" Tall Location: Haqil, Byblos, Lebanon Time Period: Upper Cretaceous ~100 Million Years Old Learn More
Out of stockThis nicely sized pair of petrified wood bookends display the distinct wood pattern associated with Cypress wood specimens.
Measurements: ~12-1/2" Wide x 9-1/2" High x 2-1/4" Deep Location: Saddle Mountain, Washington State, U.S.A. Species: CypressLearn More
Out of stock
This Orthoceras plate has great detail on every fossil specimen, and having the black on white coloring adds to the contrast.
Measurements: ~12-1/4" High x 10-3/4" Wide x 1" Deep
Location: Tindouf Basin, Morocco
Time Period: Devonian ~350 Million Years OldLearn More