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Uncommon Cretaceous naticiform gastropods from the Pacific slope of North America

, : Uncommon Cretaceous naticiform gastropods from the Pacific slope of North America. Veliger uary 2; 47(1): 21-37

Five naticiform gastropod species, not commonly found in Cretaceous rocks on the Pacific slope of North America, are described, and their paleobiogeographic implications are discussed. The moderately large Tylostoma allisoni, sp. nov. of Early Cretaceous (late Aptian) age from northern Baja California, Mexico, represents the earliest record of this tylostomatid genus in North America. Restudy of the Late Cretaceous (late early to early late Maastrichtian) Phasianella garzana Anderson, 1958, from central California, revealed that it might be a Tylostoma. These two species, along with Tylostoma? sp. indet. of late Aptian age from northern Baja California, represent all the known occurrences of this genus from the study area. Tylostoma is a cosmopolitan gastropod genus that originated during the Late Jurassic in the Old World Tethys Sea region. The very rare Pictavia santana, sp. nov. of Late Cretaceous (late Turonian) age from southern California represents the first and youngest record of this obscure naticiform genus in the New World. Pictavia originated during the Late Triassic in the Tethys Sea region. The moderately large Prisconatica hesperia, sp. nov. of Late Cretaceous (late Santonian to early Campanian) age, from near Nanaimo, Vancouver Island, British Columbia, and rare in the Santa Ana Mountains, southern California, represents the first record of this obscure naticiform genus on the Pacific slope of North America, as well as its youngest and northernmost record. Prisconatica apparently originated during the Early Cretaceous (Albian) in the New World.


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Becker, A., 1963: Damage to cereals arising from Alipur contamination during spraying with growth regulator herbicides.. Spring barley, treated 10 days before earing with an MCPA+2, 4, 5-T mixture to which was added Alipur (OMU 11+BiPC 16%) at 400 ml/ha, showed a high proportion of malformed ears 2 weeks later, the plant tissues being fibrous and the rachis being in...

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Loch, R.J.; Smith, G.D., 1986: Measuring aggregate stability under rainfall. Two methods of studying aggregate breakdown under rain were assessed: (1) in an indoor rainfall simulator using 25 g samples of aggregates supported on a muslin base (water and soil passing through the muslin were collected and wet-sieved with the...

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Baldwin, F.M.rsh; Wiswell, O.B.andt; Irons, W.G.le, 1943: Aortic Paraganglia in the guinea pig. Autopsies of 50 healthy animals of both sexes, ranging in ages of 1 week to 4 yrs., show that aortic (Zuckerkandl's) bodies express definite growth differentials throughout the life span of the guinea pig. It is assumed that accompanying thes...

Doutrelant, C.; Aubin, T.; Hitier, S.; Lambrechts, M.M., 1998: Two distinct song populations of blue tit Parus caeruleus in the French Mediterranean. Blue tits, as many other species, show much geographic variation in their songs. In blue tits, songs that include a trill (series of rapidly repeated notes) are widespread on the European mainland, but have not been reported in North Africa or the...

Dalby P.L.; Baker R.H., 1967: Crawfords desert shrew 1st reported from nuevo leon. Southwestern Naturalist 12(2): 195-196

Torgerson, Re, 1997: The foundation: capper-volstead remains critical to the future of cooperation. Rural cooperatives 64(2): 28-29

Garcia-Olmedo, R.C.rballido,, A., 1978: Study of the unsaponifiable constituents of Spanish nut oils. II. Methyl sterol fraction. Anales de bromatologia0(2): 175-186

Rodríguez, A.; Macía, M.; Navarro, J.F., 2003: Renal and hepatic failure secondary to cyanamide. Anales de Medicina Interna 20(11): 603-603