Onnia superba
Trilobites Order Asaphida, Family Trinucleidae
Geological Time: Ordovician
Size: (25.4mm=1 inch): see descritption
Fossil Site: Blekos, Morocco
 This
is SUPERB death assemblage of a member of the Order Asaphida, Family
Trinucleidae from the Ordovician deposits of Blekos, Morocco known
as Onnia superba. Cointained within this 6.7 inch by 5.7 inch matrix
plaque are TEN examples of the type 0.5 inch - 0.8 inch wide at the
genal spines. This is a NATURAL occurence, NOT a composite. There
are many fine details present, such as the tiny occipital spine and
the fine pitted cephalic ring. The trinucleids made their living by
kicking up detritus from the seafloor, filtering it through the cephalic
ring. What catastrophe resulted in this mass death? |
