Onnia superba
Trilobites Order Asaphida, Family Trinucleidae
Geological Time: Ordovician
Size: (25.4 mm= 1 inch): Trilobites are 17 - 20 mm long by 16 - 18 mm wide (including genals) on a 110 by 100 mm matrix
Fossil Site: Blekos, Morocco
Code: MT282
Price: $155.00 - sold
 Description:
This fine plaque houses three Onnia superba trilobites in a NATURAL
assemblage (NOT a composite). There are many fine details evident
such as the pitted cephalic ring by which the trilobites fed. They
presumably swam along just above the seafloor, using their legs
to kick up suspended matter into their filter chamber with the
water existing dorsally through the fenestrae (pits, Latin for
windows). Whatever catastrophe overtook them, it provides an opportunity
for a collector to add these for only about $50/example. |
