Fossil Ammonites, Fish, Orthoceras,
Trilobites and Other Fossils

page 7

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Item Description

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$18.00 FO702b  This is a set of three Black Ammonites from Peru.  These black ammonites  are species Lyelliceras lyelli. They are from Huaruco, Peru, and lived in the Cretaceous Period (middle Albian), approx. 105 million years ago. They measure smallest to largest specimen - 1 1/4", 1 1/2" and  1 7/8". 

Ammonites are extinct members of the cephalopod group of mollusks. Only a limited number of species have survived to the present day which includes the squid and the chambered nautilus. Ammonites had a multi-chambered shell, and added more chambers as it grew, always living in the outer chamber.  They lived in the Cretaceous period some 63 to 130 million years ago.

peruvian ammonite

Peruvian Ammonites

$14.00 FO701b   Here is a very nice, complete Geisonoceras fossil.  It measures 3 3/4" x 2 3/4" x 1 1/8" and is polished all over except the bottom.  It has intricate detailed suture lines and a good color blend of Blackish Brown, Gray and White.  A definite keeper for the fossil collector. 

Another photo

geisonoceras

Geisonoceras

$27.00 FO703b  This is an unique Fossil Fish Knightia specimen.  It originates from the Eocene age from the Green River Formation, Lincoln County, Wyoming. This specimen has a very nice detailed fish that measures 4 1/4" from head to tail with a partial secondary fish touching the first fish.  The Limestone matrix measures 7" x 6" x 1/2".  This fossil fish lived some 50 million years ago. They are found in a light colored Limestone.

fossil fish knightia

Knightia Fish

$40.00 FO708c  This is fossilized Lobster from Gunn Point, Darwin, Northern Territory, Australia. It was formed after the area was catastrophically buried by an intense cyclone, with Mangrove trees in Calcium rich mud. This particular specimen, although not complete is well preserved and measures 3 3/4" x 1 1/2" x 1".  It would make a great addition to any fossil collection.

Another photo

lobster

Lobster

$12.00 FO709b  Here are set of three Sand Shark Teeth.  The teeth measure approximately 1 1/2" to 2 1/8".  Each tooth has good detail and natural appearance.  These teeth would make a great gift for the fossil collector or a super educational tool for any teacher, scout leader or science center.  Similar to like item.

You will receive a set of three (3) teeth of our choosing.

3 pc shark teeth

Sand Shark Teeth  

$18.00 FO710b   This is a nice Shark Tooth Fossil in matrix.  It is from Morocco.  The specie name is Otodus Obliquus and it is from the Eocene period.  This one measures 2" diagonally and is in matrix 4 1/4" x 3" x 1 7/8". 

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shark tooth in matrix


Sand Shark Tooth   

$30.00 FO700c   This is a new  and different item at the Rock Shed, a Orthoceras Fossil Plate from Morocco.  This plate measures nearly 11 3/4"  in diameter and has a nice polish.  The plate is hand carved so it is slightly irregular in shape. The plate is a soft Brown color and has a nice Orthoceras fossil in one area with other fossils scattered throughout. A nice item for any collection.

Orthoceras was a marine cephalopod, this particular species was straight shelled and they thrived some 400+ million years ago in the Paleozoic era. 

fossil plate

Fossil Plate

$25.00 FO707b  Here is something different for the fossil collector.  This is a very nice set of 3 Orthoceras Fossil Free Forms with several nice polished specimens.  The specimens measure approximately 6 1/4" to 7" in length and 1 1/2" to 1 3/4" in width.  The fossils have a smooth, polished finish and have not been chipped out of the matrix like the Orthoceras plaques we sell.  These fossils are from Morocco.  They make great decorator pieces as well as collectible for the fossil collection.

Note:  The fossils we send will  be similar to the picture since the ones we have in stock are all very near the same size and each looks very similar to the picture (all have good detail and are nice). You will receive three (3) fossils.

Orthoceras was a marine cephalopod, this particular species was straight shelled and they thrived some 400+ million years ago in the Paleozoic era. 

orthoceras

Orthoceras

$15.00 FO704c  Here is something different for the fossil collector.  This is a very nice, above average quality Devonian Colonial Coral specimen.  The fossil measures 2 1/8" x nearly 2" x over 1" .  The Coral has nice detail and a good appearance.  A very nice addition to your fossil collection.

Another photo

Another photo

fossil coral

Coral

$25.00 FO711c   Here is a fossil Sand Shark tooth in matrix from Morocco. The species name is Otodus Obliquus and it is from the Eocene period. The tooth measures 2" diagonally and rests in a matrix that measures 3" x 3 3/4" x 1 1/2". 

shark tooth

Shark Tooth

$24.00

FO706c  This is a very nice Fossil Fish Knightia from the Eocene Age from the Green River Formation, Lincoln County, Wyoming. This fossil fish specimen is in limestone matrix measuring 6 7/8" x 5 7/8"x 3/4".  The fossil itself measures 3 1/2" from head to tail. This fossil fish lived some 50 million years ago. These fish are found in a light colored Limestone.

Another photo

     In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish.  The Green River system was composed of three lakes:  Lake Ulinta, Lake Gosiute and Fossil Lake.  These Eocene Lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiery time.
The Climate was much different from the desert-like climate of this area today.  Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today.  Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.
    
The fossils found in the Green River Formation are between 40-60 Million years old and are in excellent preservation.  The most common fish found in the formation is the Knightia, a herring-like fish.  They are found singularly or in large groupings. These groupings are referred to as "Mortality Layers" and are believed to have been caused by extensive ash fall-out after volcanic eruptions. Some of the other species of fish found in the Green River Formation are:  Phareodus, a carnivorous fish often found up to 2 feet in length and having many sharp teeth.  Mioplosus, a true perch, and Priscacara, a sunfish-like fish with stout dorsal and anal spines.  There are also turtles, stingrays, crocodiles and alligator gar-fish.
The  fossils of the Green River Formation - each one unique - are some of natures finest art. They are highly valued by collectors the world over.

knightia fish

Knightia Fish

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