cephalon) of Triarthrus has opisthoparian sutures, and the right and left free cheeks that they define are yoked. The cephalon in Triarthrus is semicircular...

bryozoans, annelids, phyllocarids, bivalves, and echinoderms. The trilobite Triarthrus eatoni comprises 85% of the organisms sampled at the locality, other notable...

closely related to Artiopoda in some analyses. Restoration of the trilobite Triarthrus eatoni Restoration of Naraoia magna (Nektaspida) Life restoration of Sidneyia...

Ordovician) Eodalmanitina (Middle Ordovician) Trinucleus (Middle Ordovician) Triarthrus (Late Ordovician) Most Early Silurian families constitute a subgroup of...

Pyritized specimen of the brachiopod Paraspirifer bownockeri Pyritized Triarthrus eatoni from Whetstone Gulf Formation Pyritized Furcaster paleozoicus from...

A fossil specimen of the trilobite Triarthrus eatoni from Beecher's Beds, showing the site's characteristic pyritic preservation style....

A Triarthrus eatoni with preserved appendages. From upper New York, United States...

Temporal range: Cambrian–Recent PreꞒ Ꞓ O S D C P T J K Pg N Fossil of Triarthrus eatoni, a trilobite Cherax wagenknechtae, a crustacean mandibulate Scientific...

is known from the Eastern Tian Shan (Central Asia). It is related to Triarthrus, but can easily be distinguished from it by an extremely long exoskeleton...

A pair of Triarthrus trilobites with pyritized soft-tissue...

Ellipsocephaloididae Family Olenidae Superfamily Incertae sedis Genus Triarthrus Wikimedia Commons has media related to Olenina. "Order - Ptychopariida...

diomedeae (Faxon, 1893) Haliporoides sibogae (De Man, 1907) Haliporoides triarthrus (Stebbing, 1914) "WoRMS - World Register of Marine Species - Haliporoides...

Rhodonaspis Saltaspis Shihuigouia Sphaerophthalmus Svalbardites Talbotinella Triarthrus (/*Brongniartia EATON)? Ullaspis Westergaardia (=Sphaerophthalmoides)...

tenuicosta †Strophomena titan †Syringopora †Tentaculites †Tetradium †Triarthrus †Triarthrus eatoni The Paleobiology Database records no known occurrences of...

†Tarphyceras †Tentaculites †Tetradium †Tetraxylopteris †Tornoceras †Triarthrus †Triarthrus eatoni †Triendoceras †Trimerus †Trochoceras †Trocholites †Truyolsoceras...

Evidence from the study of soft-bodied specimens of Olenoides serratus and Triarthrus eatoni, interpreted as indicating that trilobites had five pairs of cephalic...

†Subulites †Syringopora †Taxocrinus †Tetradium †Theelia †Treptoceras †Triarthrus †Triarthrus eatoni †Triendoceras – tentative report †Trocholites †Ulrichicrinus...

†Tentaculites †Tetraxylopteris †Titusvillia – type locality for genus †Triarthrus †Tricrepicephalus †Trimerus †Tubulella †Tuzoia †Urasterella †Vinella †Wanneria...

minuitissima †Thamnoptychia silicensis †Trematis †Trematis rugosa †Triarthrus †Triarthrus eatoni †Trigonacarpolithus †Trigonacarpolithus typicus †Trigonocarpus...

=Triangullina) Trianguraspis Triarthrella Triarthroides Triarthropsis Triarthrus (=Brongniartia) Tricopelta Tricrepicephalus (=Paracrepicephalus) Trifonella...

type locality for species †Trepospira †Trepospira illinoisensis †Triarthrus †Triarthrus becki †Tricrepicephalus †Tricrepicephalus arcuatus – type locality...

†Syringopora †Taeniocrada †Teganium †Tentaculites †Tetradium †Tetragraptus †Triarthrus †Uraloceras †Uraloceras burtiense †Uraloceras fedorowi †Uraloceras involutum...

Triarthrus eatoni, one of the last ptychopariids....

Cincinnatian Series, which includes the Kope Formation. The trilobites such as Triarthrus eatoni, Cryptolithus tessellatus, and Proetidella parviusculus have been...

the Cambrian Olenoides serratus and on the gill shaft of the Ordovician Triarthrus eatoni, and interpret these setae as likely used to groom the gills of...

Arts and Sciences. 7: 1–169. Beecher, C.E. (1893a). "A larval form of Triarthrus". American Journal of Science. 46 (275): 361–362. Bibcode:1893AmJS...46...

†Trematospira perforata – or unidentified comparable form †Triarthrus †Triarthrus becki †Triarthrus eatoni †Tricornina †Triendoceras †Triendoceras orthoseptatum...

†Subulites †Syringopora †Tentaculites †Tetragraptus †Tetrataxis †Thoracocare †Triarthrus †Trinodus †Trocholites †Tuzoia †Tylonautilus †Uraloceras †Uraloceras burtiense...

brachiopod Leptolobus, rhynchonellatan brachiopod Camarotoechia and trilobite Triarthrus. List of eurypterid genera Timeline of eurypterid research Caster, Kenneth...

report †Teichichnus †Tentaculites †Tetradium †Tornoceras †Treptoceras †Triarthrus †Triendoceras – tentative report †Trocholites †Tuditanus – type locality...