The centipede Theatops posticus (Say) (Scolopendromorpha: Cryptopidae) in the southwestern United States and Mexico

1990 ◽  
Vol 68 (12) ◽  
pp. 2637-2644 ◽  
Author(s):  
Rowland M. Shelley
Keyword(s):  
New Mexico ◽  
Southern California ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Southern Nevada ◽  
The Pacific ◽  
The Pacific Ocean ◽  
The Common ◽  
Northwestern Mexico ◽  
Pacific Species

The common eastern Nearctic centipede Theatops posticus (Say), previously reported once each from Arizona and southern Utah and therefore considered rare in southwestern North America, is widespread in Arizona and newly recorded from southern Nevada, southwestern New Mexico, southern California, and northwestern Mexico (Baja California Norte, Sonora, and Chihuahua); it is even known from Santa Cruz Island in the Pacific Ocean off the southern California coast. The species therefore exhibits a continental distribution pattern, with eastern and western populations segregated by some 1200 km (750 mi) in Texas and New Mexico. Some southwestern individuals exhibit small ventral spurs on the ultimate pre femora and (or) femora, and coxopleurae with slightly elevated, caudally produced medial borders, conditions that are intermediate between those displayed by the eastern population and the congener in California and southern Oregon. Since these variants are also geographically intermediate, they prove that the latter's phenotypic resemblance to Theatops erythrocephalus (C. L. Koch) in southern Europe represents convergence. Consequently, this name is not applicable to the Pacific species, and californiensis Chamberlin is available as its correct specific name.

Revision of the genus Pozziella (Porifera: Poecilosclerida) with description ofthree new species from the eastern Pacific

Zootaxa ◽  
2008 ◽  
Vol 1866 (1) ◽  
pp. 69
Author(s):  
GUILLERMO DÍAZ-AGRAS
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Central America ◽  
Eastern Pacific ◽  
Similarity Analysis ◽  
Galapagos Archipelago ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Three New Species ◽  
Pacific Species

To date, the poecilosclerid sponge genus Pozziella Topsent, 1896 was represented by two species: Pozziella clavisepta Topsent, 1896 and Pozziella aperta (Topsent, 1920), which are presently redescribed. During the campaign SO 144-3a of the project PAGANINI in the Pacific Ocean between the Galapagos Archipelago and Central America, three new species were recovered and are described here: Pozziella cerilla sp. nov., Pozziella neuhausi sp. nov. and Pozziella lueteri sp. nov. The present study led to a revision of the genus and an attempt to resolve the relationships between the species, based on the likeness of spicule complements and biometric characters. A similarity analysis revealed that Atlantic and Pacific species clustered separately. In addition, a key to all species of the genus based on spicular characters is provided.

Charge ’em! Damn ’em, Charge, Charge, Charge!

2017 ◽  
Author(s):  
Thomas W. Cutrer
Keyword(s):  
New Mexico ◽  
Pacific Ocean ◽  
San Antonio ◽  
El Paso ◽  
Rio Grande ◽  
The Pacific ◽  
The Pacific Ocean ◽  
New Mexico Territory

Examines the Confederate effort to open a path to the Pacific Ocean and the gold fields of Colorado, the formation of a brigade of Texas cavalry to occupy New Mexico Territory for the Confederacy, the 1862 campaign on the Rio Grande from El Paso to Gloriette Pass, and the Confederate withdrawal to San Antonio.

THE COLEOPTERA OF SANTA CRUZ ISLAND, CALIFORNIA

1934 ◽  
Vol 66 (6) ◽  
pp. 143-144
Author(s):  
H. C. Fall ◽  
A. C. Davis
Keyword(s):  
Southern California ◽  
Senior Author ◽  
Channel Islands ◽  
Santa Cruz Island ◽  
Santa Cruz

The “List of the Coleoptera of the Southern California Islands—” published by the senior author in 1897 (Can. Ent. 29, 1897, 233-244) was the result of more or less sporadic collecting upon the Channel Islands by several parties, few of them trained collectors of insects.

Late Cretaceous-early Tertiary gastropods from southwestern Patagonia, Argentina

1994 ◽  
Vol 68 (2) ◽  
pp. 257-274 ◽  
Author(s):  
Miguel Griffin ◽  
Mario A. Hünicken
Keyword(s):  
New Zealand ◽  
Pacific Ocean ◽  
Late Cretaceous ◽  
Shallow Sea ◽  
Santa Cruz ◽  
Continuous Sequence ◽  
Early Tertiary ◽  
The Pacific ◽  
Molluscan Fauna ◽  
The Pacific Ocean

The continuous sequence of Maastrichtian to Paleocene sediments exposed in the Sierra Dorotea area in southwestern Santa Cruz (Argentina) contains a rich molluscan fauna with many elements characteristic of the Weddellian Faunistic Province. The presence in this fauna of genera such as Taioma, Heteroterma, Fyfea, Zemacies, and Priscaphander suggests close affinities with faunas of similar age from New Zealand, further supporting the existence of continuous shallow-sea conditions along the southern margin of the Pacific Ocean during the end of the Cretaceous and beginning of the Tertiary. In this paper 25 species are described, of which six are new: Pseudofax costellatus n. sp., Taioma patagonica n. sp., Heteroterma elegans n. sp., Fyfea beui n. sp., Priscaphander sanjosensis n. sp., and Priscaphander bracaccinii n. sp.

scholarly journals FEASTING, RITUAL PRACTICES, SOCIAL MEMORY, AND PERSISTENT PLACES: NEW INTERPRETATIONS OF SHELL MOUNDS IN SOUTHERN CALIFORNIA

2017 ◽  
Vol 82 (3) ◽  
pp. 427-451 ◽  
Author(s):  
Lynn H. Gamble
Keyword(s):  
Social Relationships ◽  
Ground Penetrating Radar ◽  
Southern California ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Radiocarbon Dates ◽  
Socially Constructed ◽  
Shell Mounds ◽  
History Of ◽  
Ground Penetrating

Shell mounds have not been investigated as prominent ritual features in southern California, despite evidence to the contrary. The largest extant shell mound in the region is on Santa Cruz Island, measures 270 by 210 m (44,532 m² in area), is 8 m higher than the terrace it rests on, is covered with 50 house depressions, and dates to 6000–2500 B.P. In the 1920s, three cemeteries were excavated at the top of El Montón; one young woman stood out among the over 200 individuals in that she was buried with 157 stone effigies. Analysis of multiple lines of evidence, including stratigraphic profiles of features, 85 radiocarbon dates, ground penetrating radar, and mortuary data, supports my claim that the mound was a persistent place where early visitors had significant feasts, constructed dwellings, buried their dead, and performed ceremonies where select groups of infants, children, and adults were revered. These mortuary rites conveyed the symbolic power of the place and created a history of events that became part of a mythical and real past that was repeatedly visited, modified, and (re)interpreted as social relationships were reinforced. This study supports the idea that shell mounds are socially constructed landscapes, not just accumulations of refuse.

The Watercraft of Isla Cedros, Baja California: Variability and Capabilities of Indigenous Seafaring Technology along the Pacific Coast of North America

2005 ◽  
Vol 70 (2) ◽  
pp. 342-360 ◽  
Author(s):  
Matthew R. Des Lauriers
Keyword(s):  
North America ◽  
North American ◽  
Southern California ◽  
Baja California ◽  
Pacific Coast ◽  
American Archaeology ◽  
North American Archaeology ◽  
The Pacific ◽  
Political Boundaries ◽  
Northwestern Mexico

Many of the discussions addressing the issue of the capabilities and significance of early watercraft forms or a regionally specific evolutionary sequence for craft such as the Southern California plank canoe have limited their range of analogies to those forms present among the ethnohistorically documented groups of Southern California. However, this article attempts to demonstrate the existence of at least one additional form of watercraft present on the Pacific coast of Baja California, as well as call attention to the greatly underrepresented capabilities of some long-recognized forms of watercraft. Inference, historic documents, contemporary environmental conditions, and archaeological data are used in an attempt to reconstruct a meaningful picture of Isla Cedros watercraft and their place within the repertoire of indigenous maritime culture and society. It is suggested that modern political boundaries have resulted in the exclusion of Baja California from discussions of North American archaeology. This discussion attempts to be a contribution to concepts of indigenous watercraft along the Pacific coast of North America and a vehicle to expand the research horizons of North American archaeology to include the underinvestigated regions of Baja California and northwestern Mexico.

scholarly journals A statistical approach for modeling shallow (<200 m) temperature profiles in the Pacific Ocean off northwestern Mexico

2021 ◽  
Vol 47 (3) ◽  
Author(s):  
Emigdio Marín-Enríquez
Keyword(s):  
Pacific Ocean ◽  
Statistical Approach ◽  
Energy Content ◽  
Random Effect ◽  
Subsurface Water ◽  
Temperature Profiles ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Oceanographic Data ◽  
Northwestern Mexico

Temperature is perhaps the most important seawater property. It is a measure of the energy content in the ocean and it affects the metabolic rates, distribution, and abundance of species that are important from the economic and ecological points of view. Satellite-derived oceanographic data have been widely used to assess spatiotemporal variations of sea surface temperature on broad scales; satellites, however, are unable to reach subsurface levels, and obtaining reliable subsurface water temperature data is achieved by either numerical modeling or direct observations, the latter representing a very high-cost alternative. In this paper, a method for modeling temperature profiles is presented. A generalized additive mixed model (GAMM) with a gamma error distribution and an inverse link function was used to model shallow (200 m) temperature profiles in the Pacific Ocean off northwestern Mexico. The dataset included 656 profiles that were linearly interpolated at depth, which resulted in 127,595 observations. The database covered an area from 18.5º to 25.8ºN and from –114.5º to –105.9ºW in a time span from June 2007 to November 2016. The model included temperature as response variable; depth, surface dynamic topography, wind stress curl, latitude, longitude, and the Oceanic Niño Index as covariates; and month as random effect. The final model explained 86% of the total deviance of the dataset used to fit the GAMM. Although important deviations between the observations and the predictions of the model were observed, the results of the validation process and of predictions made on an independent dataset (correlation of observed vs. predicted temperature, 0.93; root-mean-square error, 1.5 ºC) were comparable to the results obtained with more complex modeling techniques, suggesting that this statistical approach is a valuable tool for modeling oceanographic data.

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