Location : Hamar Laghdad Formation, Djebel Issoumour, Alnif, Morocco Approximate Size : 6.5 x 5.2 x 2.4 cm. Here is a nice sized spiny Leonaspis trilobite from the Hamar Laghdad Formation the Hamar Laghdad Formation in the Morocco.It is very similar to the species of Kettnersapis found in the Haragan Formation of Oklahoma. The lengthy spines are intact and well preserved.
It has the habit of rolling up into a ball to protect itself from the predators with its hard exoskeleton. The entire trilobite is exposed, shown in its partly enrolled position with some of the original limestone in which it was fossilized in. Nice natural color of the trilobite contrasts beautifully with the reminent lighter grey limestone rock that it was exposed from.
Trilobites were marine arthopods, from the group Trilobita, with more than 10 thousand species some growing to 2 metres. The group Trilobita appeared in the Cambrian Period (520 million years ago) until the end of the Permian Period (250 million years ago). The name Trilobita is derived from the three (tri-) lobed structure of the exoskeleton, which has a raised central lobe (or axis) and a pair of side lobes, called pleurae. The trilobite body is also divided lengthwise into three regions : a head or cephalon, a middle region (thorax) composed of several to many articulated segments, and a tail plate called a pygidium, which consists of fused segments.Arthropods are the most species-rich animal phylum living today, and have been the most diverse group of multicellular animals since the Early Cambrian. Their main subgroups are the crustaceans (like prawns and crabs), the chelicerates (including spiders, scorpions, and mites), and the wholly terrestrial groups Insecta and Myriapoda (the latter including millipedes and centipedes). This item is in the category "Collectables\Rocks, Fossils, Minerals\Fossils". The seller is "earthstonesoz" and is located in this country: AU. This item can be shipped to Australia, North, South, or Latin America, all countries in Europe, all countries in continental Asia, New Zealand.