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Two Pyritized Triarthrus Trilobites With Legs & Feeding Traces - NY
This is a pair of pyrite replaced trilobite fossils from the Frankfort Formation in New York. The larger dorsally preserved specimen is .91" long while the smaller, ventral specimen is .35" long. The branching structures also preserved in pyrite a believed to be Chondrites feeding trace fossils.
Included with your specimen is a printed copy of the cropped in photo seen above.
Included with your specimen is a printed copy of the cropped in photo seen above.
About Pyritized Triarthrus Trilobites
Localities capable of preserving trilobites with soft-bodied anatomy are extraordinarily rare. Among the most famous of these is the historic Beecher’s Trilobite Bed, part of the Upper Ordovician Lorraine Group of New York, from which this specimen originates.
Beecher’s Trilobite Bed is renowned for its exceptional preservation, capturing details far beyond the typical mineralized exoskeletons seen at most fossil sites. Under unique conditions of rapid burial and oxygen-depleted (anoxic) seafloor sediments, trilobites and other organisms were sealed off from decay and scavenging almost instantly.
In this environment, soft tissues—normally lost to time—were chemically replaced by pyrite (iron sulfide) in a process known as pyritization. This remarkable mode of preservation records fine anatomical details such as limbs, antennae, digestive structures, and other soft-bodied features rarely seen in the trilobite fossil record.
Localities capable of preserving trilobites with soft-bodied anatomy are extraordinarily rare. Among the most famous of these is the historic Beecher’s Trilobite Bed, part of the Upper Ordovician Lorraine Group of New York, from which this specimen originates.
Beecher’s Trilobite Bed is renowned for its exceptional preservation, capturing details far beyond the typical mineralized exoskeletons seen at most fossil sites. Under unique conditions of rapid burial and oxygen-depleted (anoxic) seafloor sediments, trilobites and other organisms were sealed off from decay and scavenging almost instantly.
In this environment, soft tissues—normally lost to time—were chemically replaced by pyrite (iron sulfide) in a process known as pyritization. This remarkable mode of preservation records fine anatomical details such as limbs, antennae, digestive structures, and other soft-bodied features rarely seen in the trilobite fossil record.
$1,650
SPECIES
Triarthrus eatoni
AGE
LOCATION
Lewis County, New York
FORMATION
Frankfort Formation - Lorraine Group
SIZE
Trilobites .91 & .35" on 6.7 x 5.8" Shale
CATEGORY
SUB CATEGORY
ITEM
#350380
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