Acidaspis

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Acidaspis
Fossil range: Silurian
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Trilobita
Order: Lichida
Superfamily: Odontopleurida
Genus: Acidaspis

Acidaspis is an extinct genus of lichid trilobite. Although it grew to be about 1 inch in length, it had long spines, possibly to deter predators, such as the early acanthodian Nostolepis.