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BAJOCIAN , in See also:geology, the name proposed in 1849 by d'See also:Orbigny for the rocks of See also:Middle See also:Jurassic See also:age which are well See also:developed in the neighborourhood of See also:Bayeux, See also:Calvados. The Bajocian See also:stage is practically See also:equivalent to the Inferior Oolite of ,See also:British geologists. It corresponds fairly closely with the See also:Lower and Middle See also:- BROWN
- BROWN, CHARLES BROCKDEN (1771-181o)
- BROWN, FORD MADOX (1821-1893)
- BROWN, FRANCIS (1849- )
- BROWN, GEORGE (1818-188o)
- BROWN, HENRY KIRKE (1814-1886)
- BROWN, JACOB (1775–1828)
- BROWN, JOHN (1715–1766)
- BROWN, JOHN (1722-1787)
- BROWN, JOHN (1735–1788)
- BROWN, JOHN (1784–1858)
- BROWN, JOHN (1800-1859)
- BROWN, JOHN (1810—1882)
- BROWN, JOHN GEORGE (1831— )
- BROWN, ROBERT (1773-1858)
- BROWN, SAMUEL MORISON (1817—1856)
- BROWN, SIR GEORGE (1790-1865)
- BROWN, SIR JOHN (1816-1896)
- BROWN, SIR WILLIAM, BART
- BROWN, THOMAS (1663-1704)
- BROWN, THOMAS (1778-1820)
- BROWN, THOMAS EDWARD (1830-1897)
- BROWN, WILLIAM LAURENCE (1755–1830)
Brown See also:Jura of See also:Quenstedt, and with the Dogger of See also:Oppel. By means of the fossil See also:ammonites the Bajocia strata have been subdivided into the following zones, in descending See also:- ORDER
- ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
- ORDER, HOLY
order:
See also:Zone of Parkinsonia Parkinsoni and Cosnaoceras garantianum
Coeloceras subcoronatum (Humphriesianum)
Sonninia Romani
Stephaeoceras Sowerbyi
Harpoceras concavum
Murchisonae Substage Aalenien
opalinum of See also:Mayer-Eymar.
It should be remarked that some See also:European geologists prefer
to include the Parkinsonia zone in See also:tile See also:base of the overlying Bathonian (q.v.).
The Bajocian rocks of See also:Europe are mostly limestones of various kinds, very frequently oolitic. At Bayeux, the type See also:district, they are ferruginous oolites; in the Jura and See also:Lorraine a See also:coral See also:limestone overlies a crinoidal variety; calcareous sandy and many beds occur in See also:Maine and See also:Anjou; in See also:Poitou the limestone is dolomitic and bears nodules of chert. Rocks of the same age, as recognized by their fossil contents, have a wide range; they are found in See also:north See also:Africa, See also:Goa, See also:Somaliland, See also:German See also:East Africa, and north-See also:west See also:Madagascar; through See also:southern Europe they may be followed into See also:Turkestan, and-the Kota-Maleri beds of the Upper See also:Gondwana See also:series of See also:India may possibly belong to this stage. In See also:South See also:America they appear in See also:Bolivia, See also:Chile and See also:Argentina; in North America, in British See also:Columbia, Dakota, See also:Mexico, See also:Oregon and See also:California. The Bajocian See also:sea also included parts of New South See also:Wales, New See also:Zealand (See also:Flag Hills beds ?), See also:Borneo and See also:Japan, and it extended into the polar region of eastern See also:Greenland and See also:Franz Josef See also:Land.
In addition to the ammonites already mentioned, the large belemnites (Megateuthis giganteus) and terebratulas (T. perovalis) are worthy of See also:notice; crinoids and See also:corals were abundant, and so also were certain forms of Trigonia (T. costata), Pleurotomaria and Cidaris.
See JuRAssic; also A. de See also:Lapparent, Traite de geologie, vol. ii. (5th ed., 1906); and H. B. See also:Woodward, " The Jurassic Rocks of See also:Britain," vol. iv., 1894 (Mem. Geol. Survey) ; both See also:works contain references to See also:original papers. (J. A.
End of Article: BAJOCIAN
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