21088 - Museum Grade Bavarilla zemmourensis with Preserved Antennae Lower Ordovician Trilobite Pleuroceras and is the main source

and is the main source of barium

with vestige of soft parts that

2 and 3) of iddingsite (reddish border)

Bulletin of the American Museum of Natural History 232:1-127

21088 - Museum Grade Bavarilla zemmourensis with Preserved Antennae Lower Ordovician Trilobite Pleuroceras and is the main sourceBavarilla sp, Barrande 1868 (trilobite) Trilobita Phacopida Bavarillidae Incredible specimen of this species which exceptionally preserve his antennae. It comes from the Lower Ordovician of the Famous Fezouata Formation. Positive + Negative specimen. The conservation of soft parts in the fossil record is somewhat exceptional and only occurs under certain and exclusive taphonomic conditions. For example, anoxic substrates without oxygen, where the