{{Short description|Extinct species of trilobite}} {{redirect|Dudley Bug|the vintage car|Dudly Bug}} {{Use dmy dates|date=April 2022}} {{speciesbox | fossil_range = Wenlock<br />~{{Geological range|428|422}} | image = Calymene blumenbachii (fossil trilobite) (Much Wenlock Limestone, Middle Silurian; Wrens Nest, Dudley, England) 6.jpg | image_caption = ''C. blumenbachii'' fossil | genus = Calymene | species = blumenbachii | authority = Brongniart ''in'' Desmarest, 1817<ref>Desmarest, A. G. 1817. Calymène. in: ''Nouveau Dictionnaire d'Histoire Naturelle, Nouvelle Edition'', Tome '''8''', pp. 517 - 518.</ref> }} left|thumb|Calymene blumenbachii thumb|304x304px|Calymene blumenbachii
'''''Calymene blumenbachii''''', sometimes erroneously spelled ''blumenbachi'', is a species of trilobite discovered in the limestone quarries of the Wren's Nest in Dudley, England. Nicknamed the ''Dudley Bug'' or ''Dudley Locust''<ref name="Chestnut">{{cite web|author=Alex J. Chestnut |title=Using morphometrics, phylogenetic systematics and parsimony analysis to gain insight into the evolutionary affinities of the Calymenidae Trilobita |url=http://etd.ohiolink.edu/view.cgi?acc_num=wright1239724101 |publisher=OhioLINK ETD Center |accessdate=August 21, 2011}}</ref> 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 Formation in Much Wenlock and the 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 == {{Reflist}}
== External links == *[http://www.civicheraldry.co.uk/worcs_ob.html Dudley County Borough Council coat-of-arms] {{Webarchive|url=https://web.archive.org/web/20090605134237/http://www.civicheraldry.co.uk/worcs_ob.html |date=5 June 2009 }} at Civic Heraldry *[https://www.bbc.co.uk/blackcountry/content/articles/2007/10/10/nob_wrens_nest_feature.shtml Wren's Nest] at bbc.co.uk *{{cite journal | title = The type species of ''Calymene'' (Trilobita) from the Silurian of Dudley, England |last=Siveter |first= Derek J.|journal=Palaeontology|volume=28|issue=4|pages=783–792|url=https://www.palass.org/publications/palaeontology-journal/archive/28/4/article_pp783-792}} * 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. https://web.archive.org/web/20140714172533/http://www.nysm.nysed.gov/staffpubs/docs/16439.pdf
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Category:Calymenidae Category:Silurian trilobites of Europe Category:Silurian England Category:Fossils of England Category:Fossil taxa described in 1817
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