Scutellid-like Paralejurus spatuliformis Trilobite

Paralejurus spatuliformis

Trilobites Order Corynexochida, Family Styginidae

Geological Time: Middle Devonian

Size (25.4 mm = 1 inch): Trilobite is 51 mm long (curve measure), 26 mm across; Matrix: 90 mm by 65 mm

Fossil Site: Trafroute, Morocco

Code: 14031

Price: $235.00

Paralejurus spatuliformis TrilobiteDescription: A member of the Order Corynexochida, Family Syginidae from the Middle Devonian deposits of Tafroute, Morocco, this is an ENTIRELY NEW Scutellid-like member of the genus Paralejurus. At first glance, it looks like a Paralejurus when only the cephalon is viewed. When the matrix is rotated to see the pygidium, it can be seen to be that of the typical Scutellum, but has some terracing more like a Paralejurus. When I first saw an example at the Tucson fossil show two years ago I was unsure as to its taxonomy. A well-known US collector of trilobites whose collection of specimens is only surpassed by his collection of literature informed me recently that this one is known as Paralejurus spatuliformis. The genus derives its name from the spatulate pygidium which is far different from the vaulted forms of P. dormitzieri for example. It is most closely related to the contemporaneous P. richteri of the Czech Repulic and younger P. galloisi from France. Since both Paralejurus and Scutellum are members of the same family, it is not unreasonable to expect that transitional species could occur.

Reference: Journal of Palaeontology, 78 (4) 2004, pp 709-722.

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