Asaphus laticaudatus
Class
Trilobita; Order Asaphida;
Superfamily Asaphoidea; Family Asaphidae
Geological
Time: Middle Ordovician
Size: 78
mm
Fossil
Site: Russian Trilobites, Asery level, St. Petersburg region,
Wolchow river, Russia
|  Coming
from the Middle Ordovician Asery Level deposits near Saint Petersburg,
Russia, this is a rarely-seen trilobite known as Asaphus laticaudatus,
betrayed as such by the "widebody" appearance. Laticaudatus
means "wide-tailed". This trilobite was a descendant
of Asaphus applanatus that took on a wider body aspect; a
second branch
led to those that developed higher eyestalks, of which Asaphus
kotlukovi was a representative. Notice the fine terracing found
on the
pygidium.
Also
see: Russian
Asaphida Trilobites Russian
Trilobites Gallery Russian
Asaphidae Evolution Sequence |
|
