Elrathia
Elrathia is a genus of trilobite belonging to Ptychoparioidea known from the mid-Cambrian of Laurentia (North America). E. kingii is one of the most common trilobite fossils in the USA locally found in extremely high concentrations within the Wheeler Formation in the U.S. state of Utah.
E. kingii has been considered the most recognizable trilobite. Commercial quarries extract E. kingii in prolific numbers, with just one commercial collector estimating 1.5 million specimens extracted in a 20-year career. 1950 specimens of Elrathia are known from the Greater Phyllopod bed, where they comprise 3.7% of the community.
5 branches of this genus, most-observed first
Elrathia kingii
speciesElrathia kingii
Elrathia kindlei
speciesElrathia kindlei
Elrathia omega
speciesElrathia omega
Elrathia huananensis
speciesElrathia huananensis
Elrathia borohoroshanensis
speciesElrathia borohoroshanensis
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Elrathia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 325812.