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

coupled with low organic carbon and low organic sulfur. The trilobite Triarthrus eatoni comprises 85% of the organisms sampled at the locality, other taxa...

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

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

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 the Beechers Beds, showing the sites characteristic pyritic preservation style....

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...

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

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

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

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

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

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

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...

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...

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

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

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

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

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

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

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

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

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

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

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...

†Treptoceras cincinnatiensis †Treptoceras duseri †Treptoceras transversum †Triarthrus †Triarthrus eatoni †Triboloporus †Triboloporus cryptoplicatus †Triendoceras...