2" Devonian Conulariid (Conularia) Fossil - Bolivia

This is a 2" long coulariid fossil that was collected from the Devonian age Belen Formation of LaPaz, Bolivia. It was preserved within a nodule/concretion that was split to reveal the fossil. The 3D portion of this conulariid fossil is 1.5" long and has a repaired crack through it.

Conulariids are a poorly understood clade of extinct scyphozoan cnidarians. They are preserved in the fossil record as shell-like structures made up of rows of calcium phosphate rods. New rods were added as the organism grew in length; the rod-based growth falsely gives the fossils a segmented appearance. Exceptional soft-part preservation has revealed that soft tentacles protruded from the wider end of the cone, and a holdfast from the pointed end attached the organisms to hard substrate. The prevailing reconstruction of the organism has it look superficially like a sea anemone sitting inside an angular, hard cone held perpendicular to the substrate.

Conularia brevis
LaPaz, Bolivia
Belen Formation
Conulariid: 2" long, Entire Nodule: 2.2" long
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