Flexicalymene

Flexicalymene Temporal range: Ordovician to Silurian PreЄ Є O S D C P T J K Pg N [1]
Flexicalymene tazarensis
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita
Order:	†Phacopida
Suborder:	†Calymenina
Family:	†Calymenidae
Genus:	†Flexicalymene
Species
†F. croneisi †F. granulosa †F. meeki †F. ouzregui †F. retrorsa †F. senaria †F. tazarensis

Flexicalymene is a genus of trilobites of the order Phacopida, suborder Calymenina. They are found abundantly in North America. Flexicalymene specimens can be mistaken for Calymene, Gravicalymene, Diacalymene and a few other Calymenina genera. They are used as an index fossil in the Ordovician. Ohio and North America are particularly known for being rich with Flexicalymene fossils. Species include F. meeki and F. retrorsa (Ohio, Kentucky and Indiana), F. granulosa (Ohio, Kentucky and Quebec), F. senaria (Quebec) and F. croneisi (Ontario).

• 
  Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
• 
  Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
• 
  F. meeki
• 
  Flexicalymene species on display at State Museum of Pennsylvania. Specimen is approximately 3 cm long
• 
  Rolled F. ouzregui

References

• Trilobite info (Sam Gon III)

Trilobites
	Taxonomy	Orders Agnostida Asaphida Corynexochida Harpetida Nektaspida Redlichiida Lichida Phacopida Proetida Ptychopariida Genera List of trilobites
	Geochronology	Cambrian Ordovician Silurian Devonian Carboniferous Permian
	Notable fossils	Acropyge Calymene Cheiropyge Eofallotaspis tioutensis Hupetina antiqua Isotelus Kathwaia Misszhouia Olenus Ogygiocarella debuchii Paraphillipsia Phacops rana Profallotaspis jakutensis Pseudophillipsia Serrania gordaensis
	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 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