E. antiquata (Salter, 1859) = Conocephalus antiquatus, Conocephalites antiquatus, Ehmaniella antiquata, Elrathia alabamensis, E. georgensis, Anomocarella smithi, Ehmaniella smithi
E. marjumi (Robison, 1964)
E. permulta (Walcott, 1918) = Ptychoparia permulta
Elrathia kingii growth series with holaspids ranging from 16.2 mm to 39.8 mm in length
Elrathia is a genus of trilobite belonging to Ptychopariacea known from the mid-Cambrian of Laurentia (North America).[2]E. kingii is one of the most common trilobite fossils in the USA[3] locally found in extremely high concentrations within the Wheeler Formation in the U.S. state of Utah.[4]E. kingii has been considered the most recognizable trilobite.[5] Commercial quarries extract E. kingii in prolific numbers,[4] with just one commercial collector estimating 1.5 million specimens extracted in a 20-year career.[6] 1950 specimens of Elrathia are known from the Greater Phyllopod bed, where they comprise 3.7% of the community.[7]
"...trilobite occupied the exaerobic zone, at the boundary of anoxic and dysoxic bottom waters. E. kingii consistently occur in settings below the oxygen levels required by other contemporaneous epifaunal and infaunal benthic biota and may have derived energy from a food web that existed independently of phototrophic primary productivity. Although other fossil organisms are known to have preferred such environments, E. kingii is the earliest-known inhabitant of them, extending the documented range of the exaerobic ecological strategy into the Cambrian Period."
— Gaines & Droser[4], 2003, p941
^Elrathia at Fossilworks.org
^Geyer, Gerd; Peel, John S. (March 2017). "Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina". Journal of Paleontology. 91 (2): 265–293. Bibcode:2017JPal...91..265G. doi:10.1017/jpa.2016.152. ISSN 0022-3360.
^Johnson, Kirk; Troll, Ray (2007). Cruising the fossil freeway: An epoch tale of a scientist and an artist on the ultimate 5,000-Mile paleo road trip. Golden, CO: Fulcrum Publishing. ISBN 978-1-55591-451-6.
^ abcGaines, Robert R.; Droser, Mary L. (2003). "Paleoecology of the familiar trilobite Elrathia kingii: An early exaerobic zone inhabitant" (PDF). Geology. 31 (11): 941–4. Bibcode:2003Geo....31..941G. doi:10.1130/G19926.1.
^Brett, C. E.; Allison, P. A.; Desantis, M. K.; Liddell, W. D.; Kramer, A. (2009). "Sequence stratigraphy, cyclic facies, and lagerstätten in the Middle Cambrian Wheeler and Marjum Formations, Great Basin, Utah". Palaeogeography, Palaeoclimatology, Palaeoecology. 277 (1–2): 9–33. Bibcode:2009PPP...277....9B. doi:10.1016/j.palaeo.2009.02.010.
^Gunther, L.F.; Gunther, V.G. (1981). "Some Middle Cambrian Fossils of Utah". Brigham Young University Geology Studies. 28: 1–81.
^Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.
Elrathia is a genus of trilobite belonging to Ptychopariacea known from the mid-Cambrian of Laurentia (North America). E. kingii is one of the most common...
Cambrian (c. 507 Ma) fossil locality world-famous for prolific agnostid and Elrathia kingii trilobite remains (even though many areas are barren of fossils)...
Cambrian) near Helen Lake, Banff National Park, Canada Trilobites, like these Elrathia kingii were very common arthropods during this time Anomalocaris was an...
kind of animal in the Cambrian fossil record. Especially notable are the Elrathia of the Antelope Springs region of Utah. Sponge-like archaeocyathids were...
striae on the pre-glabellar area, and a small pygidium with few segments. Elrathia Arthropoda (unranked) Artiopoda 1950 specimens A genus of trilobite belonging...
Utah during the Cambrian period included brachiopods and trilobites like Elrathia. Cambrian fossils are known from Antelope Springs, the House Range, Millard...
furrows which are occasionally preserved. Their remains are found worldwide. Elrathia kingii, one of the most collected trilobites in the world, is a typical...
†Elrathia †Elrathia idahoensis – type locality for species †Elrathia longiceps – type locality for species †Elrathia offula †Elrathia rara †Elrathia sampsoni...
Cambrian age, which has an array of Burgess Shale type fauna, including Elrathia kingii, a trilobite that is one of Utah's most famous fossils. The Swasey...
Temporal range: Cambrian Stage 3–Late Ordovician PreꞒ Ꞓ O S D C P T J K Pg N Elrathia kingii Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum:...
have been reassigned. C. anatinus = Monocheilus anatinus C. antiquatus = Elrathia antiquata C. bailey = Bailiella bailey C. bavaricus = Leimitzia bavarica...
to Conocoryphe have since been classified in other genera. C. kingii = Elrathia kingii C. rouayrouxi = Solenopleuropsis rouayrouxi C. salteri = Leptoplastides...
notably wide and varied taxon. Some of the representative genera include Elrathia, Densonella, Norwoodia, Tricrepicephalus, Conocoryphe, and Modocia. Specialization...
Temporal range: Cambrian Stage 3–Late Ordovician PreꞒ Ꞓ O S D C P T J K Pg N Elrathia kingii (family Alokistocaridae) from the Wheeler Shale (Middle Cambrian)...
metra = Meteoraspis metra P. mutica = Mikaparia mutica P. occidentalis = Elrathia occidentalis P. oweni = Modocia nevadensis P. panope = Deadwoodia panope...
Carboniferous. Harpes perridatus, a Harpetid from the Devonian of Morocco. Elrathia kingii, a ptychopariid from the Middle cambrian Librostoma make up a large...
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