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Item Description
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Click Picture
for Larger Image
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$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!
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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.
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Oreodont
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$35.00 |
FO802c
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 5 3/4" long x
1 1/8" wide in matrix measuring 6 1/2" x almost 2 1/8" x 1 1/2". The very cool fossil has not been polished and makes an
excellent display for any collection.
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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.
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Fossil Fish
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$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.
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Ammonite
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$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.
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Ammonite
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$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
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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.
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Diplomystus
Fish
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$45.00 |
FO810c Here is
something different for the fossil collector. This is a very nice
pyritized Ammonite from Buttenheim, Germany. This Pleuroceras
ammonite fossil has both sides of the ammonite naturally replaced by
Pyrite. You can feel the weight of the Pyrite by the heaviness for it's
size. The Ammonite is from the Juassic period, Plensbachian stage,
about 185 million years old. The Ammonite measures almost 1 5/8" x
1 1/4" x 3/8" and with the matrix is 1" thick overall . A
very nice addition to your fossil collection.
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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.
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Ammonite
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$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
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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.
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Shark Tooth
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$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.
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Orthoceras
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$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
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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
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Ammonite
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$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
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Dactylioceras Ammonite
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$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.
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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.
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Schafite
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$25.00 |
FO818b
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 many
different leaves
of different trees, some over laying others. There appears to be Alder or
similar species with others that look to be Willow trees and one a
Sycamore type tree. This nice fossil specimen
is in a light colored limestone matrix measuring 6 1/2" x nearly 4
3/4" x
almost 5/8" thick and weighs almost one pound. Very nice.
Another photo Closer view
Another photo
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Fossil Leaves
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$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
2 1/8" head to tail with the other fish being 1 5/8" long. The
specimen overall is nearly 4" x almost 3 1/8" x 1/4" 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.
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Knightia Fish
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$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
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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.
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Black Hills Petrified Wood
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