This is a detailed specimen of a fossilized brittle star from the Upper Ordovician of Morocco. These specimens are commonly offered as “Ophiura sp.”

Here is a highly detailed specimen of a fossilized brittle star from the Upper Ordovician of Morocco. These specimens are commonly offered as “Ophiura sp.”

This is a inexpensive example of  the just now in 2017  by van Viersen A.P., Holland D., Koppka described species Morocops spinifer.

Here is a beautiful tiger's eye sample from the Proterozoic era of South Africa. Tiger's eye is a marine microbialite found in the Banded Iron Formation, which formed approximately 3.8 to 1.8 billion years ago during the Great Oxidation Event through the precipitation of iron in seawater.

Here is a beautiful tiger's eye sample from the Proterozoic era of South Africa. Tiger's eye is a marine microbialite found in the Banded Iron Formation, which formed approximately 3.8 to 1.8 billion years ago during the Great Oxidation Event through the precipitation of iron in seawater.

Here is a beautiful tiger's eye sample from the Proterozoic era of South Africa. Tiger's eye is a marine microbialite found in the Banded Iron Formation, which formed approximately 3.8 to 1.8 billion years ago during the Great Oxidation Event through the precipitation of iron in seawater.

Here is a beautiful tiger's eye sample from the Proterozoic era of South Africa. Tiger's eye is a marine microbialite found in the Banded Iron Formation, which formed approximately 3.8 to 1.8 billion years ago during the Great Oxidation Event through the precipitation of iron in seawater.

Here is a beautiful tiger's eye sample from the Proterozoic era of South Africa. Tiger's eye is a marine microbialite found in the Banded Iron Formation, which formed approximately 3.8 to 1.8 billion years ago during the Great Oxidation Event through the precipitation of iron in seawater.

Here is a very nice Stromatolite plate from the deep Precambrian of the USA,
Es is a polished slap with the speices Collenia undosa from the about 2.2 Billion years old  Biwabik-Iron-Formation of Minnesota.

This piece depicts a beautiful and unusual trilobite double of the species Dalmanites limulurus from the Rochester Shale of New York.

Here is a detailed but inexpensive specimen of a Conocoryphe sulzeri from Jince.

This is an excellent specimen of an agnostid trilobite of the species Onymagnostus hybridus from the Czech Middle Cambrian.

This is a classic trilobite from the Czech Republic of the species Aulacopleura konincki. The trilobite itself measures about 13 mm in length

Here is a detailed example of a fossil starfish, which is to be placed in the genus Petraster.

Here is a graptolite plate with several specimens of the species Araneograptus murrayi from the Fezouata Shale of the Draa Valley.  The species was originally established by Hall, in 1865 as Dictyonema murrayi.

This is a rare trilobite of the species Breviphillipsia sampsoni from the Carboniferous period of Missouri. This specimen is a typical trilobite exuvia (moulting remain).

Here is a detailed Graptolite piece from the Dobrotivá Formation of the Czech Republic.

This is a Czech trilobite of the classical species Conocoryphe sulzeri from the Jince Formation of Felbabka.

This large trilobite is a classical Czech Paradoxides gracilis from Jince. The trilobite itself is about 112 mm long and presents itself on a beautiful and massive piece of matrix.

This interesting fossil brachiopod of the species Diandongia pista exhibits some epibionts. During its lifetime, this brachiopod was colonized by several organisms. The epibionts resemble serpulids or possibly Archotuba sp..

Here is a beautiful Paradoxides gracilis with both cheeks from the Jince Formartion.
 

Here is a rare trilobite Trilobite of the species Ptychoparia dubinka from the middle Cambrian of Skryje.

Here is a nice trilobite of the species Ellipsocephalus hoffi from the Middle Cambrian from Jince, Czech Republic.

Here is a nice Ammonite of the species Psiloceras planorbis in a iridescent and colourful preservation.

Here is an ammonite of the species Psiloceras planorbis from Watchet, Somerset.