By Marco90
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Elrathia kingii Meek 1870
Location: Wheeler Formation, Utah, USA
Age: 507 Mya (Wuliuan, Middle Cambrian)
Measurements: 3x2 cm
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Trilobitomorpha
Class: Trilobita
Order: Ptychopariida
Suborder: Ptychopariina
Family: Alokistocaridae
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