Harpetida - Harpididae

Harpes Perradiatus Trilobite 66mm

£682.00 GBP

The extraordinary and famous Harpes trilobite measuring overall 66mm is a fine specimen and wonderfully articulated. These exotic trilobites have formed some of the most iconic sci-fi films made to date, from space ships to aliens! One of our favourite trilobites for the wings are superb. The attributes of the species are most notable by the wide heavily pitted brim, the fringe with a curled rim which has the appearance of a folded or crimped edge. From anterior brim emanate two stout yet elegantly free spines, long and tapering to a point (these refixed post-excavation work in the Lab), the genal spine and upper carapace similarly featuring the curled rim. The eyes are set back high on the glabella (mid head shield), while the thoracic segments (mid-body), well defined and have a flexure halfway along the thorax just before the posterior of the pygidium (tail section) rolls underneath itself, a partially enrolled body section.

With reference once more to the Martian looking brim, this wide brim with innumerable pitting could have been an aid to give the invertebrate lift, much like a hydrofoil, again this is theory, we may never know the exact purpose. One thing we do know is that this is another firm favourite of our team, a remarkably well preserved and conserved fossil trilobite which would grace most collections.

Over the 250 million year range of the trilobites, many different morphological adaptions developed from free swimmers to bottom sifters. In this type an expanded and pitted cephalic (cephalon - headshield), fringe, is a distinct anatomical development, harpetids and trinucleids types have this. The function of the wide dished fringe of the Harpes is still a matter of conjecture.

Palaeontologists theorise the possible functions of these anatomical features, either being a wide sieve to filter bottom sediments for food or even possibly for detecting movement, a sensory organ, like a sonar dish or large receptor sounding dish, they function much like the large dishes on earth listening out into space.

Genus: Order Harpetida, Family Harpididae, Harpes perradiatus Trilobite.
Age: Palaeozoic, Lower Devonian (Pragian), 354 - 417,000,000 years.
Origin: Tazoulait formation, Jdel Issoumour, Nr Alnif, Morocco, North Africa.

Harpes perradiatus Trilobite measurement.
Length: 4.3 cm
Width: 6.6 cm
Depth: 5.8 cm

Overall matrix measurement.
Length: 4.3 cm
Width: 2.6 cm
Depth: 2 cm

Weight: 0.000 g

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Free standard UK delivery - Recorded/Signed-for

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All orders outside the United Kingdom are Tracked/Signed-for for you to follow.

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All products include a certificate of authenticity signed by THE FOSSIL STORE.

All THE FOSSIL STORE products are authentic specimens of high quality.

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Larger items need more time for delivery with custom packaging requirements to guarantee secure delivery of your item/s.

Once arranged and your order is completed at checkout The Fossil Store will assign your order to DPD Precise or an alternate courier of our choosing.

Please contact us for Next Day Delivery - availability is limited to a multitude of variables including processing times and time of enquiry.

For more information on Returns please see our Returns Policy. Some Exclusions Apply. Learn more about Thefossilstore.com delivery options and Returns Policy.

Please note, for UK orders - small products usually arrive within 3 - 5 business days.
Large products usually arrive within 4 - 10 business days.

For deliveries outside of the UK, please see our Delivery and Returns.

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