Calymene blumenbachi

Calymene blumenbachii Temporal range: Silurian (Wenlock) PreЄ Є O S D C P T J K Pg N
Calymene blumenbachii, on display at the Natural History Museum, London
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita
Order:	†Phacopida
Suborder:	†Calymenina
Family:	†Calymenidae
Genus:	†Calymene
Species:	†C. blumenbachii
Binomial name
Calymene blumenbachii Brongniart in Desmarest, 1817

Calymene blumenbachii, sometimes erroneously spelled blumenbachi, is a species of trilobite discovered in the limestone quarries of Wren's Nest Hill in Dudley, England. Nicknamed the Dudley Bug or Dudley Locust^[1] by 18th century quarrymen it became a symbol of the town and featured on the Dudley County Borough Council coat-of-arms. Calymene blumenbachii is commonly found in Silurian rocks (422.5-427.5 million years ago) and is thought to have lived in the shallow waters of the Silurian, in low energy reefs. This particular species of Calymene (a fairly common genus in the Ordovician-Silurian) is unique to the Wenlock series in England, and comes from the Wenlock Limestone in Much Wenlock and Wren's Nest in Dudley. These sites seem to yield trilobites more readily than any other areas on the Wenlock Edge, and the rock here is dark grey as opposed to yellowish or whitish as it appears on other parts of the Edge, just a few miles away, in Church Stretton and elsewhere. This suggests local changes in the environment in which the rock was deposited.

References

External links

• Dudley County Borough Council coat-of-arms at Civic Heraldry
• Wren's Nest at bbc.co.uk
• Derek J. Siveter, 1985 : The type species of Calymene (Trilobita) from the Silurian of Dudley, England
• Donald G. Mikulic & Joanne Kluessendorf, 2007: The legacy of the locust—Dudley and its famous trilobite Calymene blumenbachii. In: D. G. Mikulic, et al., editors. Fabulous Fossils, 300 years of worldwide research on trilobites. New York State Museum Bulletin 507, p. 141-170. http://www.nysm.nysed.gov/staffpubs/docs/16439.pdf

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