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2.3" Pennsylvanian Phyllocarid (Concavicaris) Fossil - Iowa
This is a phyllocarid (Concavicaris sp.) fossil from the Pennsylvanian-aged Stark Formation near Thayer, Iowa. It's 2.3" long and rests on a 5 x 3.9" rectangular piece of slate.
It comes with an acrylic display stand.
It comes with an acrylic display stand.
Phyllocarids are a type of arthropod that first developed during the Cambrian. They had a hard protective shell, hinged carapace, and were thought to have a lifestyle similar to shrimp. Exactly how they fit into the arthropod taxonomy is still under debate: they may represent either a stem-lineage euarthropod or a primitive branchiopod crustacean.
SPECIES
Concavicaris sp.
AGE
LOCATION
Thayer, Iowa
FORMATION
Stark Formation
SIZE
Phyllocarid: 2.3" long, Slate: 5 x 3.9"
CATEGORY
ITEM
#262607
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