Fossil Ammonites, Fish, Orthoceras,
Trilobites and Other Fossils

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

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

$175.00 FO800b  This is a very nice fossil skull of a Leptauchenia, a small Oreodonta from the Brule Formation in the White River Badlands of South Dakota. A Leptauchenia was a goat-like species of terrestrial herbivore belonging to the Oreodont family.  This fossil is from the Oligocene period and is about 30 million years old.  The highly detailed upper skull is in matrix that measures nearly 5 1/2" long x 3 1/4" wide x almost 3 1/4" tall.  This Oreodont skull is very detailed and rests in a light colored limestone matrix that has been mostly carefully removed to further expose the fossil.  An awesome fossil to display in your collection!

Another photo

Another photo

Another photo

Another photo

The Oreodonta is an extinct suborder of mammal in Order Artiodactyla, and therefore distantly related to pigs, hogs, camels, hippopotamuses, and the pig-like peccaries. Over 50 species of Oreodonta have been described. They first appeared some 50 million years ago during the warm Eocene and were widely prevalent during the Oligocene in the grasslands, prairies or savannas of what is now the North American badlands. Today, fossil jaws and teeth of the Oreodonta are commonly found in the White River badlands in South Dakota, Nebraska, and Wyoming. Oreodonts are Artiodactyls, even toed ungulates, sometimes called a cross between a pig and a sheep. Note that they have both large canine front teeth, but also molars for chewing plants. They were herding animals and grazers, eating mostly grasses. They averaged three to four feet long.

fossil

Oreodont

$45.00 FO802b  Here is something different from the Rock Shed's Fossil department.  This is a very nice fossilized fish from the Santana Formation, Ceara, Brazil.  We believe the fish species to be Rhacolepis Buccaulis.  The well-preserved fossil has extraordinary detail and measures almost 6 1/2" long x 2" wide in matrix measuring 7" x  over 2 1/4" x nearly 1.  The very cool fossil has not been polished and makes an excellent display for any collection. 

Another photo

Another photo

Another photo

The Santana Formation is in the Araripe Basin near it's namesake, the village of Santana in northeastern Brazil.  During the early Cretaceous period, the South Atlantic was opening up in a long narrow shallow sea.  The Santana Formation has exceeding well preserved and diverse fossil assemlage including some 25 species of fossil fishes often found with preserved stomach contents.  There are also fine examples of pterosaurs, reptiles and amphibians, invertebrates and plants.  The taphonomy of the site resulted in limestone accretions that formed nodules around dead organisms, preserving even soft parts of them. 

fossil

Fossil Fish

$90.00 FO803c   Here is a great find!  This is a very nice, above average quality, fossilized Ammonite from Morocco.  The specimen was carefully chiseled out of the original matrix revealing the detailed ridges of the Ammonite.  It measures over 7" x almost 6 1/8" x over 2 3/4", weighs over 4 1/4 pounds and has not been polished.  A super cool fossil.

Another photo

Another photo

ammonite

Ammonite

$25.00 FO804b  This is a neat find, a complete Ammonite from Nigeria in matrix. This fossil has not been polished or cut. The complete specimen measures nearly 3 3/4" x 2 3/4" x 2".  The Ammonite itself is 2 3/4" x 2 1/4" x 2".  There are imprints of other fossils in the matrix along with additional fossil pieces.  An awesome fossil Ammonite for any collection! 

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

$35.00 FO808b  This is an interesting Fossil Fish from the Eocene Age from the Green River Formation, Lincoln County, Wyoming. The unique specimen has a fossil fish Knightia alta on each side.  The one pictured at the right is nicely detailed and measures nearly 4 7/8" from head to tail x 1 7/8".  The fish on the reverse side is not complete, missing it's tail but is 3 7/8" long. The specimen overall measures nearly 6 5/8" x 5 5/8" x nearly 7/8" thick.  This fossil fish lived some 50 million years ago and are found in a light colored Limestone.

Another photo  Closer view

Another photo  Reverse side fish

Another photo  Closer view reverse side

     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 natures finest art. They are highly valued by collectors the world over.

fossil fish

Diplomystus Fish

$10.00 FO810c  Here is something different for the fossil collector.  This is a very nice, above average quality Petoskey stone specimen.  The fossil measures almost 2 1/2" x nearly 1 7/8" x almost 1 1/4" and is nicely polished.  The fossilized coral has nice detail and a good appearance.  A very nice addition to your fossil collection.

Another photo

Another photo

Another photo

Petoskey stones are composed of fossilized coral, Hexagonaria percarintata, deposited in the Devonian period, some 350 million years ago. They are found in the Gravel Point Formation of the Traverse Group in the northwestern portion of Michigan's lower peninsula.

fossil

Petoskey Stone

$12.00 FO811c  This is a very nice Sand Shark's Tooth Fossil in matrix from Morocco.  The specie name is Otodus Obliquus and it is from the Eocene period.  This Shark's tooth with two side cusps measures nearly 1 7/8" diagonally x 1 1/4" wide and is in matrix of almost 4 1/4" x nearly 4" x almost 1 5/8".  Nice!

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

$26.00 FO813c   Here are very nice, above average quality, Orthoceras fossil specimens cut into a free form plaque.  The plaque measures approximately 8 3/4" x 6 1/4" x over 1 3/4" thick and weighs nearly 4 1/4 pounds.  The fossils on the face have been chipped out of the matrix and polished to reveal very good detail and unique characteristics.  They range from 5" to 7 3/4" long.

Another photo  Closer view

Another photo

Orthoceras is a genus of extinct Nautiloid Cephalopod.  These fossils are common and have a global distribution which occur in any marine rock, especially Limestone.  These are slender, elongated shells with the middle of the body chamber transversely constricted and a sub-central orthochoanitic siphuncle.  The surface is ornamented by a network of fine lirae or fine lines/ridges.

fossil

Orthoceras

$50.00 FO814b  Here is something different for the fossil collector.  This is a very nice above average quality, colorful Ammonite.  The exterior has been smoothed on both sides to show the highly detailed suture lines. The specimen measures 4 3/4" x 3 7/8" x almost 1 1/4" thick and has a nice polish on both sides.  This super Ammonite fossil is from Madagascar and displays very nicely.  

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

Ammonite

$45.00 FO815b   This is a fossilized Ammonite from the early Jurassic (Lias) period nearly 200 million years ago.  This is species Dactylioceras Commune from near Whitby in North Yorkshire, England. This is a nice quality Ammonite with a second smaller one emerging from the matrix.  The larger Ammonite measures nearly 3 1/8" x 2 3/4" in a matrix that is almost 3 3/4" x 3 1/2" x 1 3/8" overall.   

Another photo

Another photo

Another photo

fossil

Dactylioceras Ammonite

$60.00 FO817b   This is a very nice find of a high quality Schafite in matrix from South Dakota.  The Schafite has a natural, iridescent, pearl-like finish.  The larger Schafite measures 2 1/8" x 1 3/4" in a fossilized limestone matrix measuring 8 1/8" x 5 3/4" x almost 3 1/2" and weighs over 5 1/2 pounds.  Close observation will reveal many other partial to semi-complete fossils throughout the 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 Hoploscaphites Nicoletti which is from the Cretaceous Period some 60 million years ago.  It is from the Fox Hills Formation in South Dakota.

fossil

Schafite

$100.00 FO818c  Here is something different from the Rock Shed's Fossil department.  This is a very nice Fossil Leaf specimen from the Eocene Age from the Hell Creek Formation in Montana. This very cool specimen has five leaves of three different trees. The one at the top in the picture to the right appears to be from an Alder or similar species and measures over 1 3/4" x 1/2" wide. Three others look to be from Willow like trees and the last one a Sycamore type tree.  This extremely nice fossil specimen is in a light colored limestone matrix measuring almost 7 1/2" x 7" x 1 3/4" thick and weighs over 5 pounds.  Very, very nice.

Another photo  Closer view

Another photo

Another photo

Another photo

Another photo

fossil

Fossil Leaves

$20.00 FO820b  This is a nice pair of smaller Fossil Knightia eocaena Fish from the Eocene Age from the Green River Formation, Lincoln County, Wyoming.  The longer of the Fossil Fish measures almost 2 1/2" head to tail with the other 1 7/8" long.  The specimen overall is 3 3/4" x 2 5/8" x 3/8" thick.  These fossil fish lived some 50 million years ago and are naturally found in a light colored Limestone.

Another photo  Closer view

Another photo

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 natures finest art. They are highly valued by collectors the world over.

fossil

Knightia Fish

$24.00 FO822c  This is a slab of Petrified Wood from the beautiful Black Hills of South Dakota.  It measures almost 7" x 4 5/8" x 2 1/2" thick and is highly polished on the front face.  This beautiful specimen has a nice shaded Brown color with Darker Brown accents.  This material is unique in that it is very unpredictable; some may have interesting cavities, internal and/or external fractures and natural knots.  A perfect work of nature.

Another photo

Another photo

Another photo

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.

fossil wood

Black Hills Petrified Wood

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


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