Drotops Megalomanicus Trilobite 130mm

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Drotops Megalomanicus Trilobite 130mm

SKU:TFS0005

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Drotops Megalomanicus Trilobite 130mm. An excellent fossil trilobite displaying some key attributions of the type, particularly in the images of the underside of the hypostome, chin area and the doublure, the doublure is the under edge of the exoskeleton or continuation of the dorsal carapace in the ventral view, where the carapace wraps itself back under the dorsal surface. A rare view of the morphology of the exoskeleton carapace.

Genus: Drotops Megalomanicus. (Phacops Rana Africanus).
Age: Paleozoic Era, Middle Devonian, Eifelian stage, approximately 390 million years.
Origin: Region of Daya el Maider, Nr Tafraoute Sidi Ali, Djebel Issimour, Alnif, Morocco North Africa.

Drotops Megalomanicus measurements.
Length: 13 cm
Width: 7 cm
Height: 3 cm

Approximate weight: 363g

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Drotops megalomanicus trilobite 130mm previously known as Phacops rana africanus, however due to the newly discovered Trilobites of similar genus and anatomy, its name has now been revised. Now named the Drotops Megalomanicus, this species is well known for its bulky, robust body and size. This Drotops Megalomanicus thoracic segments have been engineered by evolution to interlock and provide armour with flexibility. Now named Drotops Megalomanicus and also previously known as Phacops Rana Africanus. From Morocco, North Africa this trilobite dates back to the Devonian era, around 390 million years.


This Drotops megalomanicus trilobite thoracic segments have been engineered by evolution to interlock and provide armour with flexibility, under this chitin exoskeleton the arthropod defended its soft body parts now lost to the ravages of the fossil bed. In this type the tubercles seen on the carapace or exoskeleton have no spines,in other types spines evolved giving the invertebrate more defence.


We do not know positively, some theorist suggest they could also be for a feel or sensory defense. Amazing and intriguing,we have so much to learn from these little bugs! This arthropod has three lobes longitudinally, these name it, from the Greek, tri-lobite,three lobes which run into the pygidium (tail), also the three parts of the exoskeleton which often separate in the fossil beds are the glabella (head), thorax and pygidium. These make up the complete carapace or exoskeleton, this is shed in the animal’s lifetime and we find them enrolled which could possibly have been a defence posture or the shed carapace fossilised.


Fewer complete specimens are unearthed from many fossil sites of Morocco compared to the heyday of discoveries, exhausted beds become more difficult to manage over time as fossil material is excavated from deeper deposits. There are many other factors for consideration which influence the outcome of fossils trilobite collecting in Morocco generally. Once collecting specimen of good quality was a relatively successful process, available across several Moroccan trilobite species, we now find less quality specimens available. Many older established beds suffer erosion, more frequent flooding, increasingly dwindling supply of decent specimens in the bedding plane, and deeper veins of sedimentary fossilerous limestone contribute particularly to the large Phacops types becoming scarcer.

Additional Information

SKU TFS0005
Age Devonian
Origin Morocco
Colour Black

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