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INVESTMENT GRADE SPINY COMURA TRILOBITE PROTRUDING OFF THE ROCK WITH ALL SPINES PREPARED FREE-STANDING

Hamar Laghdad Formation - Erfoud, Morocco

DEVONIAN PERIOD:  395 - 345 million years ago

The COMURA trilobite is one of the most stunning spiny trilobites to have ever inhabited the prehistoric seas.  They are wondrous creatures with complex displays of spines and bizarre symmetry.  It must have been an amazing site to witness such marvels of creation slowly crawling across the ocean floor.  It is no wonder that trilobites have been labeled "butterflies of the ancient seas".

This INVESTMENT GRADE spiny Comura trilobite represents the finest possible quality of preservation, completeness and displays an entire array of authentic spines freed completely from their matrix and exposed.  This species is one of the most complex and difficult to prepare in this manner and such a project encompasses untold hours of meticulous preparation and skill.  All three rows of spines running down the lobes of this trilobite and all other cephalonic spines have been exposed and are 100% AUTHENTIC.  The trilobite is prepared with the head (cephalon) protruding up off of the rock and rock is removed from beneath.  This time-consuming fantastic, natural position gives the impression as if it is attempting to crawl off its original limestone matrix.  Examples like this come along only on very rare occasion and 100% authentic examples are becoming increasingly difficult to find.  Perfect for the most demanding advanced collector striving to acquire specimens based on the finest rarity and quality, not "bargain-grade" material. 

WARNING:   There are several different grades of spiny trilobites on the market now with seemingly identical and very convincing appearances.  Fakers have mastered producing 100% complete replicas of trilobites with free-standing spines.  There are also classes of trilobites offered from the source that have varying degrees of fabrication such as a genuine trilobite but with all spines being fabricated.  Prices generally will reflect the quality as the source preparators and sellers know the global prices and charge accordingly for the different degrees of authenticity of their specimens.  Nevertheless, price should not be your only guide.  Often, features such as thicker than normal spines and a dull, almost chalky appearance without any natural satin luster to the creature are some obvious signs of fakes.  Know how to tell a genuine from a fake by reading this and rely ONLY on established professional sellers who have active experience in fossil preparation and will offer you an unconditional LIFETIME guarantee IN WRITING of the authenticity of the specimen. 
 


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'.

ONE OF THE MOST DIFFICULT AND TIME CONSUMING TRILOBITES TO PREPARE IN THIS FASHION!

SUPREME SPECIMEN!  HEAD PROTRUDES UP OFF OF ROCK

VERY RARE SPECIES TRILOBITE WITH 100% ORIGINAL SPINES ALL FLOATING FREE OF MATRIX!

3.4" long and 3.3" wide with matrix, trilobite is 2.4" long if straightened

SOLD     TRX063     Actual Item - One Only  

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