Fossil Ammonites, Fish, Orthoceras,
Trilobites and Other Fossils

Page 6  Go To Page:  [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 7 ] [ 8

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Cost

Item Description

Click Picture
for Larger Image

$110.00 FO600c  This is a very nice, good quality Schafite or Ammonite in matrix.    It measures 3 1/8" x 2 1/2" in a fossilized matrix measuring 6 1/2" x almost 4 7/8" x 2 3/4".  The Schafite has a natural, iridescent, pearl-like finish.  This excellent fossil is from the Upper Cretaceous Fox Hills Formation in north central South Dakota.  Close observation will reveal many other partial to semi-complete fossils throughout the limestone matrix.  These fossils make great gifts or work wonderful as an educational tool for school, scouts or clubs. 

Another photo

Another photo

Another photo

Another photo

This fossil is a member of the Species Sphenodiscus Lenticularis which is from the Cretaceous Period some 60 million years ago. 

fossil

Schafite

$25.00 FO601c  Here is something different from the Rock Shed's gift department.  This is a very nice, above average quality heart shaped Fossil box.  It measures 3 3/8" wide x almost 4 1/4" x over 1 3/4" tall with the lid and is polished on the top of the lid and the outer sides.  The box has a soft Black color with well defined Geisonoceras fossil on the lid, as well as other fossils in the matrix on the bottom.  A true work of nature and man.

Another photo

Another photo

Another photo

fossil

Orthoceras Fossil Box

$95.00 FO602b  This is an extra large, above average quality specimen of Petrified Wood Slab from Madagascar.  It has been highly polished on one side and measures 11" x 11" x 1/2".  The wood has a nice blend of Earth tone colors and has a very different, irregular shape and design. 

Petrified Wood is a type of a fossil as it consists of fossil wood where all the organic materials have been replaced with minerals while retaining the original structure of the wood.  These minerals are most often Silicates such as Quartz.  Other minerals, Manganese, Iron and Copper, in the water or mud during the petrification process give Petrified Wood a variety of color ranges: black - Carbon; green/blue - Copper; red/brown/yellow - Iron.  Petrified Wood can preserve the original structure of the wood in all its detail all the way down to the microscopic level.  Structures such as tree rings and the various tissues are often observed features.  Although Petrified Wood can be found worldwide, it is rather rare in larger quantities and at times can be difficult to obtain by the average collector.

petrified wood

Petrified Wood

$140.00 FO603c  This is a nice cross-section of a Fossil Mammoth Tooth dredged from the North Sea between England and Holland by a fishing boat.  The sea floor was a river bed when Mammoths flourished and England was connected to the European Continent.  Sea levels were much lower before the last Ice Age.  This nice fossil Mammoth Tooth cross-section measures 3 1/2" x 3 5/8" x 5/8" thick with a nice polish on each face.   Mammoth teeth are hard to come by;  add this fine example to your fossil collection!

Another photo

Another photo

Another photo

Mammoths originated about 4 million years ago and became extinct about 10,000 years ago during the last Ice Age. Commonly known as Woolly Mammoth, their Latin name is Mammothus Primigenus.  Mammoths grew up to 8 meters tall and could weigh up to 8 tons.  Frozen and mummified Mammoths have been found in Siberia with hair, skin and internal organs intact preserved.  They likely became extinct through a combination of climate change and hunting by ancient man.  

fossil

Mammoth Tooth

$160.00 FO604c  This is a very nice fossil Trilobite from Morocco.  It measures nearly 2 1/2" long x almost 1 3/4" wide setting in a matrix measuring 5 7/8" x 4 1/4" x nearly 1 5/8" thick including the Trilobite.  The uncommon Trilobite species appears to be Order Corynexochida and family Thysanopeltidae and is from Devonian period from the Sahara Desert in the northern part of Africa.  This awesome fossil shows evidence of being professionally repaired but displays very nice!

Another photo    Closer view

Another photo

Another photo

Another photo

Trilobites are hard-shelled, segmented members of Arthropoda and the class Trilobita that existed throughout almost all of the Paleozoic era, flourishing in the earlier part of it and slowly declining in the later part. The most common trilobites were about 2-7 cm (1-3.5 in) in length, but over their long history they ranged in size from 1 mm-72 cm (.04 in-28 in) and exhibited so much variation that they are classified into nine (or possibly ten) orders with more than 15,000 species. The smallest species are presumed to have been part of the free floating plankton, while the more common, mid-sized species probably walked along the sea floor filtering mud to obtain food, and the larger varieties may have been swimming predators.

fossil

Trilobite 

$75.00 FO605c  This is a very nice fossil Trilobite from Morocco.  It measures over 3" long x almost 1 7/8" wide resting in a matrix measuring 5 1/4" x 3 3/4" x almost 2".  The species order is Phacopida and sub-order Phacopina. The fossil is from Devonian period and came from the Sahara Desert in the northern part of Africa.  Very nice!

Another photo

Another photo

Another photo

Trilobites are hard-shelled, segmented members of Arthropoda and the class Trilobita that existed throughout almost all of the Paleozoic era, flourishing in the earlier part of it and slowly declining in the later part. The most common trilobites were about 2-7 cm (1-3.5 in) in length, but over their long history they ranged in size from 1 mm-72 cm (.04 in-28 in) and exhibited so much variation that they are classified into nine (or possibly ten) orders with more than 15,000 species. The smallest species are presumed to have been part of the free floating plankton, while the more common, mid-sized species probably walked along the sea floor filtering mud to obtain food, and the larger varieties may have been swimming predators.

fossil

Trilobite

$125.00

FO606b  Here is a very cool fossilized Nautiloid from Madagascar.  This particularly large fossil measures nearly 5" x 3 7/8" x almost 3 1/4" and has been nicely polished on all sides.  The fossil is complete and has good detail and great color.  Close inspection shows specks of Pyrite on one side near the center and along the chamber lines.  A great educational tool or very cool keepsake. Very cool!

Another photo

Another photo

Another photo

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.

fossil

Nautiloid

$18.00 FO607c  This is a fossilized Shark Tooth in matrix from Morocco.  The specie name is Otodus Obliquus and is from the Eocene period.  This nice Shark Tooth with a prominent side cusp measures 2 1/2" diagonally x 1 1/4" wide in a Limestone matrix that is 4 3/8" x over 3 7/8" x nearly 1 1/4" thick.   Very cool!

Another photo

Another photo

Another photo

Sand Shark or Otodus obliquus (the Great Grandfather of the Megalodon) is one of the earliest mackerel sharks. These teeth are noted for their wide triangular crown and large side cusps (occasionally multiple side cusps). The Otodus obliquus was the king of the early Eocene, approximately 50-55 million years ago. These large teeth are very showy, making them a must have for every fossil shark teeth collection. Large Otodus obliquus teeth are not easily located in the phosphate pits in Atlas Mountains of Morocco, but can still be affordable. 

fossil

Shark Tooth

$28.00 FO608b  Here is a very nicely polished Ammonite from Madagascar.  The specimen measures 3 5/8" x 3" x nearly 1" and has a nice polish on the both sides. The medium sized Ammonite has a nice color that has a cool iridescent effect as the light hits it from different angles.

Another photo

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.

ammonite

Ammonite

$30.00 FO609c  This is something different for a fossil collector and a really great find!  Here is a very nice fossilized Geisonoceras stand up. The larger Geisonoceras fossil specimen measures nearly 4 3/4" across at the longest x almost 3 7/8".  The stand overall is 9 7/8" tall x 5 1/2" wide x approximately 4" with a nice polish on the highly detailed Geisonoceras fossil.  A unique and great addition to any fossil collection.

Another photo  Closer view

Another photo

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

fossil

Geisonoceras Stand

$40.00 FO610b  This is a very nice, high quality Ammonite Sphenodiscus in matrix from the Fox Hills Formation in South Dakota.  The Sphenodiscus measures nearly 2 1/2" x over 2 1/4" in a fossilized matrix measuring nearly 4 1/4" x over 4" x 3 3/8".  The Sphenodiscus has a natural, iridescent, pearl-like finish.  These fossils make great gifts or work wonderful as an educational tool for school, scouts or clubs. Close observation will reveal several other partial to semi-complete fossils throughout the matrix.

Another photo

Another photo

Another photo

fossil

Sphenodiscus

$40.00 FO611b  This is a very nice Fossil Fish Diplomystus dentatus from the Eocene Age from the Green River Formation, Lincoln County, Wyoming.  The highly detailed fossil itself measures nearly 6 1/8" from head to tail x almost 2".  This fossil fish specimen is in a tan limestone matrix measuring over 6 1/2" x almost 4 5/8" x nearly 5/8" thick.  This fossil fish lived some 50 million years ago.

Another photo  Closer view

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 Tertiary 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 nature's finest art. They are highly valued by collectors the world over.

fossil

Diplomystus Fish

$18.00 FO612c  This is a nice, completely fossilized somewhat rare Ammonite found in matrix from South Dakota.  The interesting ammonite measures 7/8" in diameter in a fossilized matrix measuring 3 1/2" x 1 5/8" x nearly 1 3/8" thick.  

Another photo 

Another photo 

Another photo

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.

fossil

Fossil Ammonite

$10.00 FO613b  Here is a matched pair of Ammonite halves from Madagascar.   This Ammonite has been polished inside to show the inner beauty.  Each half measures approximately 1 1/2" x 1 1/4" x 5/16" thick and has a nice polish on the inside. The Ammonite has a dark brown crystallized center of Calcite and Aragonite. 

Another photo 

Similar to like item.

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 one matched pair.

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.

ammonites

Ammonite Pair 

$10.00
  
For 2 Pieces
FO614b  This is are portions or sections of fossil shark tooth from the Megalodon Shark.  These sections are fairly large and nice specimens measuring approximately 2 1/2"  to over 3" long x 1"  to 1 1/2" wide.  The shark teeth portions have various shades of nice gray colored enamel and great detail.  You get two pieces or sections of our choice directly from our stock. 

Another photo

Similar to like item. 

This tooth is from the largest shark ever known to live.  The Carcharocles Megalodon sometimes ranged in size up to 60' in length and weighed over 52 tons.  This huge monster is the largest predatory fish that ever lived, second only in size to the sperm whale.  Fossil teeth have been found that exceed 7 inches in length.  These sharks lived in the Miocene period some 23 million years ago to the Mid Pliocene times, 3.6 million years ago.  This specimen is from South Carolina.  

fossil

Shark's Teeth Pieces

I'm on Page 6
Go To Page:
[ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 7 ] [ 8 ]


Ordering information and instructions

Click on the link below if  you would like to get an idea of shipping cost on your package
Shipping Calculators

The Rock Shed
515 1st Street
Keystone, SD  57751

Hours: Monday - Saturday 9:00 AM to 6:00 PM
Sunday 1:00 to 6:00 PM
 Toll Free Order Line:  1-866-354-0894
 Information:  605-666-4813
email:  info@therockshed.com

Home
  Long Gemstone BeadsShort Beads I Amber & Necklaces I Bracelets I Earrings I Sterling Pendants
Rosaries I Fossils I Copal I Polished Rock
I Educational Kits I Bookends I Gold Specimens I Gallery
Hearts I Septarians I Spheres I Eggs I Minerals I Gemstone Lights I Books I Plastic Stands I Brass Stands
Rock Tumbler Page I Grit and Accessories I Tumbling Rock I Rough Rock I Landscape Rock
Lapidary Grinders I Lapidary Saws I Diamond Blades I Agates I Findings I Clearance
Shipping Information I History I Auctions
I Pictures I Links