Arctinurus boltoni
 

scale in cms

CLASS - Trilobita
ORDER - Lichida
FAMILY - Lichidae
GENUS/SPECIES - Arctinurus boltoni

ROCK UNIT - Rochester Shale, Lewiston Member

AGE - Middle Silurian (425 million years old)

LOCALITY - Middleport, New York, USA

Although this specimen measures 12.5 centimeters long, other lichid trilobites were even larger. Notice that the left side of this specimen does not mirror the right side. Let's take a closer look to find out why.

PRI 42095