Entomaspis is an extinct genus of harpetid trilobite from Upper Cambrian to Early Ordovician marine strata of the United States. Species are typified by...

type genus, Entomaspis, whose species are found in Utah and Missouri, and Hypothetica, which lived sympatrically with Utah species of Entomaspis, and Baikadamaspis...

harp snails and that taxon had precedence. Entomaspididae Baikadamaspis Entomaspis (=Hypothetica) Harpetidae Arraphus Bohemoharpes (=Declivoharpes; =Unguloharpes)...

Retifacies 1989 Maotianshan Shales Schmalenseeia 1903 Burlingia 1908 Entomaspis 1931 Neodrepanura 2006 Maotianshan Shales Emeraldella 1912 Burgess Shale...

for species †Ellesmeroceras †Ellipsocephalus †Elrodoceras †Encrinurus †Entomaspis †Eophacops †Eophacops handwerki †Eospirifer †Eospirifer radiatus †Eucalyptocrinites...

†Encrinurus †Encrinurus egani †Encrinurus nereus †Encrinurus reflexus †Entomaspis †Eodictyonella (formerly Dictyonella) †Eodictyonella reticulata †Eoleperditia...

Engelomorrisia (=Capricornia) Enixus (=Schistocephalus) Ensecoryphe Enshia Entomaspis (=Hypothetica) Entsyna Entsyna Eoacidaspis Eoagnostus Eoampyx Eoanomocarella...

appear in the late cambrian with the primitive genera Baikadamaspis and Entomaspis of the family Entomaspididae. The first Proetida appeared during the cambrian-ordovician...