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Paleozoic Era

The Paleozoic Era (230-600 million years ago)

Trilobite

The first invertebrate form of life on earth, for more than 345 million years, over 4000 species of Trilobite roamed the sandy bottoms of the seas and coral reefs in search of food, becoming extinct at the end of the Paleozoic.

D 1 1/2" X 1" #1507 $12.95
D 2" X 1" #1509 $15.95 D 2 1/2" X 1 1/2" #1510 $18.95

In Matrix #2511 $24.95
D 3" x 2 1/2"

Orthoceras

One of the first Cephalopods with an elongate chambered shell, the Ortheceras is part of a class of mollusks best known for their many arms and tentacles. The elongate partitioned shell served mainly as protection.

In Matrix
D 12" X 10 1/2"
#2507 $69.95

Smooth
Sm D 2 1/2" - 3" #2302 $2.95
Med D 4" - 5" #2302.2 $4.50
Lg D 5" X 2 1/2" #2501.6 $9.95

Rough
Med #2501.4 $9.95
Lg #2501.3 $12.95

Ammonoids

Arising from Nautilus-like ancestors, the relatives of squid and octopi, both Ammonites and Goniatites are Cephalopods which proliferated greatly in the Upper Paleozoic through the Mesozoic. Consequently, they became extinct during the same events which gave rise to the end of the dinosaurs.

D 4 1/2" X 5" #2503 $39.95
Smaller Sizes
D 3 3/4" X 3" #2303 $17.95

Polished Ammonites
D 61/4" X 5 3/4" #2504.3 $29.95

Polished Ammonites
D 2 " #8726 $3.98

Cut Polished Small Ammonites D 1" - 1 1/2"
#1508 $2.95/ea

D

4 1/2" X 5" X 2"
#2505 $28.95

Empty

Fossil Ferns

Found in the coal fields of Pennsylvania, these common tree ferns date to the Mississippian Period over 350 million years ago. The short leaflets were attached to the stalks along their entire base.

Sm D 4" Item: #4916.1 $2.95
Med D 6" Item: #4916.3 $7.95

Lg D 7.5" Item: #4916.4 $12.95

Ex-Fine D 11" X 4.5" Item:# 4916.5 $19.95

Empty

Pyrite Sun

Found in the coal mines of Sparta, Illinois at the 300 foot level in a very narrow seam above the coal vein, Pyrite Suns were originally thought to be Marcasite. Research done by the Smithsonian has now proven them to be Pyrite. Dating in age to 350 million years old, one of the present theories as to their origin has them as a fossil replacement.

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D approx. 3 1/2" Diameter
#6208 $14.95

In a Matrix D 8" X 5 "
#9205 $32.95

In a Matrix D 7" X 8"
#9203 $34.95

Fossil Coral

The vast water corals include five main groups, three of which have become extinct. Though many of the Mesozoic and Cenozoic corals descended from earlier Paleozoic examples, there are several which evolved independently in the later Eras

D 4 " X 5" #8911 $21.95
D 6" X 5" #8905 $27.95

D 9" X 7" X 6" #8912 $89.95

Fossil Shark Teeth

Surviving and flourishing for over 400 million years, sharks have roamed the great oceans and waterways. A shark skeleton is made completely out of cartilage. For this reason, the discovery of a complete fossil shark skeleton is extraordinarily rare. However, because sharks as far back as the Paleozoic routinely shed their worn and broken teeth, we have wonderfully preserved examples of the ancestral fossils. Several examples of the larger teeth belonged to Carcharadon Meglodon, who roamed the oceans during the Cenozoic Era and may have been as long as 45 feet in length.

Great White Shark Teeth
D 1 1/2" #4917 $3.98

D 3 1/2 " X 3" #6906 $53.00

D 4" X 3 1/4" #6906.1 $55.00

In Matrix
Tooth Size: Aprox 3" x 2"
#2509 $22.50

Fossilized Prehistoric
Shark Teeth
D 3 " X 2"
#8725 $14.95

Bagged Fossilized
Shark Teeth
#4915 $1.59

Petrified Wood

By Far one of the most stunning and varied fossil replacements is that of petrified wood. Ranging in a myriad of colors from red, gray, brown, white, and black, many of the original attributes of the tree, including its rings, are wonderfully preserved. Scientists can learn a great deal about the cycle of growth and age of trees through their rings, a study known as Dendrochronology.

Swamp Bog
D 4 1/4" X 4 3/4" X 2 1/2"
#0414.1 $26.50
D 5" X 4 1/2" x 3"
#0414.2 $28.99
C. D 6" X 6 1/4" x 2"
#0414.3 $39.95

Brilliant Wood
D 4" X 6"
#8902 $24.95

D 7 1/2" X 4" X 1/2"
#2801.3 $24.95

D 10" X 8 1/2" X 1/2"
#4132 $72.95

Petrified Wood Limb Sections
D 3" X 5" X 3"
#4107 $24.95
D 3 1/2" X 3" X 5 1/2"
#4106 $19.95
D 3 1/4" X 4" X 2 1/2"
#4101 $13.25
D 6" X 5 3/4" X 2 3/4"
#4131 $28.95

See more Petrified wood pieces in Decortive Art, Fossils and Minerals and also under Bookends in that section.

Mesozoic Era

Age of Dinosaurs

Cenozoic Era

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