Misplaced Pages

Calymene niagarensis Temporal range: Middle Silurian
Fossils of Calymene niagarensis from Ohio, United States, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita
Order:	†Phacopida
Family:	†Calymenidae
Genus:	†Calymene
Species:	†C. niagarensis
Binomial name
†Calymene niagarensis Hall, 1843

Calymene niagarensis is a species of trilobite belonging to the genus Calymene. These nektobenthic carnivores lived in the Middle Silurian, from 436.0 to 426.2 Ma.

Description

Calymene niagarensis is a small species, reaching a length of about 4 centimetres (1.6 in) and a width of about 2.7 centimetres (1.1 in). It has around 20 body segments and small, round eyes.

Distribution

Fossils of this species have been found in the Silurian sediments of United States. Most specimens have been found in New York and Oklahoma.

References

1. ^ Paleobiology Database

• The Fossil Forum

v t e Trilobites
Taxonomy	Orders Agnostida Asaphida Corynexochida Harpetida Redlichiida Lichida Phacopida Proetida Ptychopariida Genera List of trilobites
Geochronology	Cambrian Ordovician Silurian Devonian Carboniferous Permian
Notable fossils	Earliest Fritzaspis spp. Hupetina antiqua Lunagraulos Profallotaspis jakutensis Serrania gordaensis Latest Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopleurella
Notable trilobitologists	Alexander von Humboldt Joachim Barrande Alfred Russel Wallace Charles Doolittle Walcott Charles Emerson Beecher Roderick Murchison Adam Sedgwick Rudolf Kaufmann Rudolf Richter & Emma Richter Martin Basse Niles Eldredge George Frederic Matthew Harry B. Whittington Brian D. E. Chatterton Richard Fortey Euan Clarkson Franco Rasetti Gregory D. Edgecombe Bruce S. Lieberman Gerald J. Kloc Gerhard K. B. Alberti Teiichi Kobayashi Johan Wilhelm Dalman
Paleobiology	Cambrian explosion Cruziana Diplichnites Permian–Triassic extinction event Rusophycus Trilobite zone
Notable fossil sites	Anti-Atlas Mountains Beecher's Trilobite Bed Burgess Shale Emu Bay Shale Gees, Gerolstein Hunsrück Slate Jince Formation Latham Shale Llandeilo Group Maotianshan Shales Silica Shale Formation Takaka Terrane Walcott–Rust quarry Wenlock Group Wheeler Shale Wolchov River Wren's Nest
Morphology	Exoskeleton Tagmata Cephalon Thorax Pygidium Axial lobe Pleural lobe Terminology Cranidium Effacement Enrollment Facial sutures Fixigena Gena Genal angle Glabella Gonatoparian Heteronomous Homonomous Hypostome Isopygous Librigena Macropygous Micropygous Opisthoparian Proparian Prosopon Spinosity Subisopygous Soft body parts Appendages Digestive tract Internal organs Musculature Antennae Eyes Sensory pits
Category:Trilobites

This Phacopida-related article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Calymenidae
• Paleontology in New York (state)
• Paleontology in Oklahoma
• Phacopida stubs