Taxonomy and biostratigraphy of Coniacian through Maastrichtian Anchura (Gastropoda: Aporrhaiidae) of the North American Pacific Slope

1996 ◽  
Vol 70 (3) ◽  
pp. 381-399 ◽  
Author(s):  
William P. Elder ◽  
L. R. Saul

North American Pacific Slope deposits of Coniacian to Maastrichtian age have yielded eight biostratigraphically useful species of Anchura: A. (Helicaulax?) popenoei new species, Coniacian; A. halberdopsis new species, early Campanian; A. callosa Whiteaves, 1903, early Campanian; A. falciformis (Gabb, 1864), late early to middle Campanian; A. phaba new species, middle to late Campanian; A. ainikta new species, middle to late Campanian; A. gibbera Webster, 1983, late Campanian to early Maastrichtian; A. baptos new species, late Maastrichtian to early Danian. In addition, two other possible species are A. nanaimoensis (Whiteaves, 1879), middle to late Campanian, and Anchura? new species, late Maastrichtian. These species together with two additional Turonian species, A. (Helicaulax) tricosa Saul and Popenoe, 1993, and A. (H.) condoniana Anderson, 1902, allow the definition at least eight Late Cretaceous Anchura zones for the Pacific Slope. These zones have durations of 1.5 m.y. to 4 m.y.Anchura (H.?) popenoei from northern California appears most closely related to A. (Helicaulax) tricosa Saul and Popenoe, 1993, of Turonian age from southern California. Anchura callosa, A. falciformis, A. nanaimoensis, and A. phaba appear to be closely related based on sculptural elements, as does A. gibbera despite having an anterior spur on the wing. However, these species appear to belong to two latitudinally differentiated faunal provinces. Species having a northern range include A. callosa, A. falciformis, and A. nanaimoensis, whereas A. phaba and A. gibbera are from more southern deposits, as are also A. halberdopsis, A. ainikta, and A. baptos.

2002 ◽  
Vol 76 (2) ◽  
pp. 386-390 ◽  
Author(s):  
L. R. Saul ◽  
R. L. Squires

Nerineoids, so typical of the Jurassic and Early Cretaceous in Europe, are usually rare and lacking in diversity in North America north of Mexico. This is especially true of the Pacific slope faunas. Only three species of nerineoid gastropods have previously been reported from the Cretaceous of California (Saul and Squires, 1998). The oldest of these species, Aphanoptyxis andersoni Saul and Squires, 1998, is from the Early Cretaceous (Hauterivian) in northern California. The other two species are Late Cretaceous (Turonian): Aphanoptyxis californica Saul and Squires, 1998, is from northern California, and Nerinella santana Saul and Squires, 1998, is from a locality and strata in southern California near the occurrence of Nerinella califae n. sp. The description of N. califae n. sp. gives California the greatest diversity of Turonian northeastern Pacific slope nerineoids, namely, Aphanoptyxis californica and two species of Nerinella. These Turonian nerineoids are also, thus far, the geologically youngest North American Pacific slope nerineoids.


1993 ◽  
Vol 67 (6) ◽  
pp. 965-979 ◽  
Author(s):  
L. R. Saul

Four new venerid species from the Cretaceous of the North American Pacific Slope are described and four previously described species are reassigned. Of the new species, two are allotted to new genera: Rhaiphiale based upon Rhaiphiale pharota n. sp. and Egrona based upon Egrona fallax n. sp., both Turonian in age and from southern California. The other new species are Loxo quintense n. sp., of late Maastrichtian age from California, and Paraesa cedrina n. sp., late Albian in age from Baja California, Mexico. The previously described species “Meretrix” arata Gabb, 1864, Turonian, and “?Meretrix” fragilis Gabb, 1869, late Maastrichtian, are placed in the new genus Callistalox; “Meretrix” lens (Gabb, 1864), Campanian age, and Flaventia zeta Popenoe, 1937, Turonian, are provisionally assigned to Paraesa Casey, 1952. This is the first identification of Paraesa from the Pacific Slope of North America. No species of Flaventia Jukes-Brown, 1908, is now known in Pacific Slope faunas.


The Festivus ◽  
2019 ◽  
Vol 51 (2) ◽  
pp. 103-107
Author(s):  
Roger Clark

A new deep-sea chiton of the genus Placiphorella Dall, 1879, Placiporella laurae n. sp. is described from the Pacific coast of North America. It is compared with its congener Placiphorella pacifica Berry, 1919, from which it differs primarily by having granular valves, lacking false beaks, a papillose girdle, and the characteristics of its girdle spicules


1969 ◽  
Vol 47 (3) ◽  
pp. 387-393 ◽  
Author(s):  
Michael J. Tynen

The following new species of littoral enchytraeid are described from the east coast of Vancouver Island, British Columbia—Enchytraeus cryptosetosus, Lumbricillus mirabilis, L. vancouverensis, L. georgiensis, L. qualicumensis, L. belli. These descriptions bring the number of North American Enchytraeus spp. to 6 and that of Lumbricillus spp. to 13. Existing evidence suggests that the enchytraeid fauna of the Pacific slope is quite distinct from that of the rest of North America and may have closer affinities with that of the northwest Pacific.


1998 ◽  
Vol 130 (4) ◽  
pp. 427-490 ◽  
Author(s):  
K.G.A. Hamilton

AbstractThe North American genusCeratagalliaKirkaldy, 1907 is redefined to include subgenusAceratagalliaKirkaldy, 1907 (=IoniaBall, 1933, syn.nov.) with 78 species in two subgenera. Two additional new species are unplaced to subgenus:C. aceratafrom Oregon, andC. emarginatafrom Mexico. The typical subgenusCeratagalliahas 30 species, includingC. gillettei(Osborn & Ball, comb.nov.),C. sordida(Oman, comb.nov.), and two new speciesC. anafrom Mexico andC. viperafrom Washington state. SubgenusAceratagalliahas 46 species, all new combinations underCeratagallia. The economic "species" formerly known as "sanguinolenta" is divided into the Canadian clover leafhopperC. humilis(Oman) and the American clover leafhopperC. agricolasp.nov. Other new taxa in subgenusAceratagalliainclude 18 new species and seven new subspecies:alaskana(ssp. ofsiccifolia)from Alaska;omanion the Pacific coast from Oregon to British Columbia;clinoandlophiafrom the Oregon interior;compressa(ssp. ofsiccifolia),gallus,modesta,okanagana, andzacki(ssp. ofnanella) from intermontane valleys of the Pacific northwest and southwestern mountains;interior(ssp. ofhumilis) androssifrom the Sonoran subregion;australis(ssp. ofnanella),coma,ebena,entoma,falcata,oionus, andvenosafrom Mexico and Texas;alvarana(ssp. ofhumilis),cerea,cristula,harrisi, semiarida, andviatorwidespread between the Appalachian and Rocky Mountains; andwhitcombi(ssp. ofrobusta) from Florida to Arizona. Four former species are reduced to subspecies:compactaOman andpoudrisOman inC. robusta(Oman),helveolaOman inC. cinerea(Osborn & Ball), andtruncataOman inC. humilis. The taxa are keyed and illustrated, and their phylogeny is discussed.


1984 ◽  
Vol 116 (9) ◽  
pp. 1227-1249 ◽  
Author(s):  
J. M. Campbell

AbstractThe genus Porrhodites Kraatz is redescribed to include the Nearctic Paradeliphrum inflatum Hatch, as well as the Holarctic Porrhodites fenestralis (Zetterstedt). Orochares Kraatz is also redescribed to include Paradeliphrum (new synonymy). In addition to O. angustatus Erichson from Europe, O. japonicus Cameron from Japan and O. villiersi Jarrige from Iran, Orochares now includes two Nearctic species, Paradeliphrum tumidum Hatch from the Pacific Northwest and the new species O. suteri from Illinois and Wisconsin. Keys are provided to distinguish the North American species of each genus, and the major diagnostic characters of all included taxa are illustrated.


1990 ◽  
Vol 64 (4) ◽  
pp. 552-556 ◽  
Author(s):  
Richard L. Squires

The marine bivalve Fimbria susanensis n. sp. is reported from the uppermost Paleocene part of the “Meganos Stage” in the upper Santa Susana Formaton, Simi Hills, southern California.Fimbria pacifica n. sp. is reported from the middle lower Eocene “Capay Stage” strata of the Pacific coast of southwestern North America. The new species is present in the lower Bateque Formation, Baja California Sur, Mexico, and in the lower Juncal Formation, Whitaker Peak area and Santa Ynez Mountains, southern California.Fimbria susanensis n. sp. and F. pacifica n. sp. are the only fimbriids known from the Pacific coast of North America. Previously reported Pacific coast species, which gave a range of Late Cretaceous to late Eocene for this genus in this particular area, do not belong to Fimbria.


1983 ◽  
Vol 115 (6) ◽  
pp. 577-622 ◽  
Author(s):  
J. M. Campbell

AbstractThe North American species of the genus Olophrum Erichson are revised. Seven species are recognized, the holarctic species O. latum Mäklin, O. boreale Gyllenhal, O. consimile Gyllenhal, and O. rotundicolle C. R. Sahlberg; the eastern North American species O. obtectum Erichson, and the new species O. cascadeuse known from northern California and eastern Oregon and O. idahoense known from southern Idaho.Lectotypes are designated for O. marginatum Mäklin (= O. consimile), O. parvulum Mäklin (= O. consimile), O. convexum Mäklin (= O. rotundicolle), and O. convexicolle LeConte (= O. rotundicolle). The following new synonymy was established: O. bernhauerianum Scheerpeltz, O. recticolle Scheerpeltz, O. recticolle curtipenne Scheerpeltz are synonyms of O. consimile; O. quesneli Hatch is a synonym of O. boreale; and O. brevicolle Bernhauer is a synonym of O. latum. All species are described and illustrated with scanning electron photomicrographs and line drawings, five maps showing the North American distribution of each species are provided, and a key is presented to aid in the identification of the species. All available records and biological data for the species are provided.


PMLA ◽  
2016 ◽  
Vol 131 (3) ◽  
pp. 743-751 ◽  
Author(s):  
Kirsten Silva Gruesz

Considering that it was summertime, the weather in New England was puzzlingly cold. Nonetheless, the men in the seabeaten wooden ship offered thanks, in the Protestant fashion, for the bounty of fresh provisions: oysters and seals; vast herds of deer, tule elk, and pronghorn. Mutual curiosity informed their encounters with the people they met. The English admired their extraordinary basketwork, their shell ornaments, their headpieces of brilliant black condor feathers.If the bio- and ethnoscapes of this New England sketch seem a little off, it is because I have moved its longitudal coordinates west by fifty degrees and spun the time setting of an originary North American encounter back by several decades. The English sailors and supplicants were not Puritan separatists but the remainder of Sir Francis Drake's circumnavigation expedition, which made landfall along the Pacific coast—by most estimates, in northern California—in 1579. The story of their several weeks' stay there is speculative in many senses. The fortuitously named Golden Hind returned loaded with treasure; the marker that Drake supposedly placed near his landfall buttressed unfulfilled English territorial claims for many years after; and in our own day historians, anthropologists, and geographers both trained and untrained continue to debate the precise location of Nova Albion. This is the very stuff of which counterfactual histories and speculative historical fictions are made: what if other Englishmen had later returned with settlers and supplies? If the English colonial project along the North American Pacific had rooted itself earlier, and farther south than Vancouver, would its later pattern of settlement have pulsed west to east across the continent instead of east to west?


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