This ULTRA-RARE spiny-tailed Asaphus trilobite with an AUTHENTIC tail spine is truly an extraordinary find.  This is only the second specimen of this rare unnamed species we have ever offered.  The color is also a rarity in a stunning natural salmon red hue.  The color appears to be a form of red ochre which is found throughout the African continent, made up on anhydrous iron (III) oxide.  In certain Ordovician beds in the Northwestern Sahara Desert, it occasionally occurs in certain trilobite fossils but it is uncommon as the normal color is brown or yellowish-brown and when stained with natural limonite, yellowish-orange.  This specimen has a fantastic salmon red color that can also be verified as original by the presence of an existing natural edge of the host rock to prove its color origin, shown in a photo above.  Caution should be exercised if you ever see this type available for sale as it is popular for the Moroccan fakers to make these with a genuine ordinary Asaphus trilobite of the tail-less variety with an artificially attached tail spine on its end.  There are features shown above that provide definitive proof of the authenticity of this trilobite and the originality and authenticity of its graceful tail spine.

This trilobite is a scientifically undescribed species belonging to the Asaphidae family.  The presence of the tail spine is what makes this trilobite so rare.  Asaphid trilobites do not normally possess such anatomy.  This specimen was found in Ordovician rock from the Anti-Atlas mountains in southern Morocco along the Northern Sahara.  This is the SECOND ever specimen of this specific kind we have ever been able to offer.  The overall preservation of the body is rough but fully mineralized.  Both eyes are visible as are the body segments.  This piece looks much better in person than the photos convey.  The host rock is original did not sustain the typical extensive damage by extraction in the field.  A few fractures in the end running through the tail actually HELP to positively demonstrate the tail spine's authenticity because hey can be seen running through the spine and also where the tail meets the body.  The cephalon and thorax protrude dramatically off the rock.

The entire host rock is 100% original with no additional parts added and only cracks repaired.  The trilobite has NO FABRICATION and only cracks were filled and repaired.  For the most demanding collector of RARE FOSSILS, and a prized addition to the most impressive fossil trilobite collections.  This specimen presents itself with a very rare opportunity to acquire an example of a SCARCE trilobite that is rare in not only its type but its color, as well.

 

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Trilobites are hard-shelled, segmented creatures that lived hundreds of millions of years ago in the Earth's ancient seas.  They are considered to be one of our planet's earliest complex life-forms and are one of the key signature creatures of the Paleozoic Era.  Trilobites went extinct before dinosaurs even existed. 

Next to dinosaur fossils, trilobites command a dedicated and passionate following amongst both scientists and fossil collectors, alike.  In a relatively short time-frame (scientifically speaking, of course), we have the emergence and subsequent extinction of these fascinating creatures.  Still most baffling is the incredible diversity of sizes and features that made up the trilobite group.  Many bizarre species co-existed with highly specialized body parts that defy the theories of evolution in their "sudden" emergence and diversity during the Early Cambrian Period in what is known as the 'Cambrian Explosion'.  

Trilobites were among the world's first arthropods, a phylum of hard-shelled creatures with multiple body segments and jointed legs (although the legs, antennae and other finer structures of trilobites only very rarely are  preserved).  They constitute an extinct class of arthropods, Trilobita, that is comprised of over 15,000 known species.

It has been reported that every year, four to five new species are discovered in the Atlas and Anti-Atlas Mountain regions in Morocco, alone!   This desolate northern fringe of the Sahara Desert was once covered by a prehistoric ocean and its fossil deposits can be considered the world's richest and most diverse source of these ancient sea creatures.

Trilobites are the single most diverse group of extinct organisms that ever existed, period!  The smallest known trilobite is just three millimeters long, while the largest type grew to a length of 70 centimeters (over two feet long!).  The most common fossil of trilobites is the mineralized dorsal exoskeleton of the creature.  This is found in partial form from molting (shedding the shell as it grows) or in complete form when the animal was buried and died intact.  The soft parts of the underside are rarely preserved.  The name 'TRILOBITE' means 'three lobed" and is derived from the fact these animals had bodies featuring three longitudinal lobes, not lateral (head, body, tail) as is often thought.  The lateral division of three parts is shared by many arthropods, not just trilobites.

Considerable study has been done on trilobites as a whole organism.  Even more fascinating though, is the research done on a microscopic level with regards to trilobite morphology.    Radiographs have captured incredible detail of complete and fully articulated antennae and underparts like legs and gills, preserved in the host rock of some fossilized specimens.  Perhaps the most impressive and classic feature of trilobites that comes to mind is the eyes.  Microscopic studies of trilobite eye structures have also revealed marvelous adaptation and very high degrees of specialization in vision.  

It seems that the more we learn about trilobites, the unfolding of their mystery is stranger than fiction.  Certainly we gain a greater appreciation with each new discovery of these strange and highly advanced but now extinct 'butterflies of the ancient seas'.