The Rock Shed Fossil Gallery

Diplomystus Herring

This beautiful plague holds a Diplomystus in excellent condition.  The Diplomystus is a close relative to the herring and sardine, although the Diplomystus is now an extinct fish living in the Eocene period. There has been some minor touch ups to the fossil, but they are not noticeable. This plaque weighs 14 lbs and the fish measures  by . This fossil plaque is will be an excellent addition to any fossil collection.

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. 

$1200.00

Oviraptor Egg

This Oviraptor egg is in extremely good condition and is approximately 85 million years old.  It measures 7" by 3" and weighs 2 pounds 2 ounces. The shell is approximately 90% intact and has been laboratory prepped. The majority of the egg is clean and with very detailed texturing and has been coated with a fossil protectant. The Oviraptor was considered an "egg seizer" and lived in the Cretaceous period. The Oviraptor was first discovered by Roy Chapman Andrews in 1924.

$1200.00

Crinoid Plaque

 This is Crinoid plague is a great addition to any collection. With approximately five nearly complete crinoids and various partially complete crinoids, it is definitely beautiful. This plaque weighs 40 pounds and measures 23" by 22". The Crinoid was an interesting living organism but it makes an even more interesting fossil. 

$1000.00

Quartz Crystal

 This is a absolutely stunning Quartz Crystal formation. Measuring 1' x 7" and weighing 9 pounds 7 ounces, it really is a beautiful to look at. While is an excellent specimen consisting of approximately 75+ crystals, two of the taller crystals have some damage to the tip. You can see the damage to one of the crystals in the middle photo, it is the far left crystal in the front. A really beautiful piece, and would make a great addition to any collection.

Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

$450.00

Septarian Sphere

This is a gorgeous septarian sphere that will make a great addition to any collection. Weighing approximately 10 pounds and measuring 6 1/2" it is a larger sphere. Although most of the crystals are golden brown Aragonite there is one Barite crystal measuring approximately 2" in length in core of the sphere. due to the nature of this sphere there is an area on its cavern edge that chipped off while grinding, which can be seen on the left corner of the cavity of the first photo. 

Septarians are commonly composed of a carbonate mineral such as Calcite, a microcrystalline form of Silica as in Flint or Jasper, or an Iron Oxide such as Hematite.  These specimens are also known as a concretion which is a type of sedimentary rock.  Septarians were formed millions of years ago by sediment forming around a fossil to create a mud ball transforming the fossil into Calcite and Aragonite.

$600.00