scholarly journals Correlating the Arperos Basin from Guanajuato, central Mexico, to Santo Tomás, southern Mexico: Implications for the paleogeography and origin of the Guerrero terrane

Geosphere ◽  
2014 ◽  
Vol 10 (6) ◽  
pp. 1385-1401 ◽  
Author(s):  
Michelangelo Martini ◽  
Luigi Solari ◽  
Margarita López-Martínez
Keyword(s):  
Central Mexico ◽  
Southern Mexico ◽  
Guerrero Terrane

Paleomagnetic Data and the Accretion of the Guerrero Terrane, Southern Mexico Continental Margin

2013 ◽  
pp. 73-92 ◽  
Author(s):  
H. Böhnel ◽  
L. Alva-Valdivia ◽  
S. Gonzalez-Huesca ◽  
J. Urrutia-Fucugauchi ◽  
D. J. Moran-Zenteno ◽  
...  
Keyword(s):  
Continental Margin ◽  
Paleomagnetic Data ◽  
Southern Mexico ◽  
Guerrero Terrane

New productide brachiopods (Productoidea) from the Carboniferous of Ixtaltepec Formation, Oaxaca, Mexico

2016 ◽  
Vol 90 (3) ◽  
pp. 418-432
Author(s):  
Miguel A. Torres-Martínez ◽  
Francisco Sour-Tovar
Keyword(s):  
United States ◽  
New Species ◽  
New Genus ◽  
The United States ◽  
Central Mexico ◽  
Southern Mexico ◽  
Stratigraphic Range

AbstractFrom the Santiago Ixtaltepec area, in Oaxaca State, southern Mexico, 11 species of productoid brachiopods, including a new genus and five new species, are described.Semicostellasp.,Antiquatoniasp.,Keokukia? sp.,Inflatia inflata,Reticulatiacf.R.huecoensis,Buxtonia websteri,Weberproductus donajiaen. gen. n. sp.,Dictyoclostus transversumn. sp.,Inflatia coodzavuiin. sp.,Buxtonia inexpletucostan. sp., andFlexaria magnan. sp. were collected from eight stratigraphic levels of the Ixtaltepec Formation. The presence ofSemicostellasp.,Keokukia? sp. andInflatia inflatain the basal strata, Units 1 to 3, of the formation indicate a Viséan-Serpukhovian (Late Mississippian) age.Reticulatiacf.R.huecoensisandBuxtonia websteri, found in Units 6 to 8, confirm the Pennsylvanian age for upper strata of the Ixtaltepec Formation.InflatiaandFlexariaare present in the uppermost beds of the formation so it is possible to extend their upper stratigraphic range to the Middle Pennsylvanian. All these taxa also occur in the United States Midcontinent, suggesting that during the Carboniferous the epicontinental sea extended at least to central Mexico.

Areas of endemism of the North American species of Tigridieae (Iridaceae)

2016 ◽  
Vol 29 (2) ◽  
pp. 142 ◽  
Author(s):  
Guadalupe Munguía-Lino ◽  
Tania Escalante ◽  
Juan J. Morrone ◽  
Aarón Rodríguez
Keyword(s):  
North American ◽  
Grid Cell ◽  
Volcanic Belt ◽  
Data Matrix ◽  
Central Mexico ◽  
Southern Mexico ◽  
Western Mexico ◽  
The North ◽  
Areas Of Endemism ◽  
Andean South America

The tribe Tigridieae (Iridoideae: Iridaceae) is a New World group with centres of diversity in Mexico and Andean South America. North America harbours 67 of the 172 species recognised within the tribe, 54 being endemic. Our aims were to identify areas of endemism of the North American Tigridieae using endemicity analysis (EA) and to infer their relationships using parsimony analysis of endemicity (PAE). A data matrix with 2769 geographical records of Tigridieae was analysed. The EA allowed to identify six consensus areas of endemism in Mexico. The PAE resulted in one cladogram with four clades and the following five biotic components: northern Mexico, western Mexico, central Mexico, southern Mexico and central–southern Mexico. The richness analysis of these areas of endemism indicated that the greatest concentration of species is located in central Mexico, with 14 species in one grid-cell. Grid-cells with 12 species each were identified in low western Mexico, high western Mexico, southern Mexico and central–southern Mexico. This last area is characterised by the greatest endemism, including nine species. The formation of the Transmexican Volcanic Belt seems to have been a key element to explain the diversification of North American Tigridieae.

WHAT AND WHERE IS OLMEC STYLE? Regional perspectives on hollow figurines in Early Formative Mesoamerica

2002 ◽  
Vol 13 (2) ◽  
pp. 171-195 ◽  
Author(s):  
Jeffrey P. Blomster
Keyword(s):  
Gulf Coast ◽  
Central Mexico ◽  
Southern Mexico ◽  
Contextual Data ◽  
Limited Access ◽  
Interregional Interaction ◽  
Group 2 ◽  
Definition Of ◽  
Early Formative ◽  
Group 1

To understand better the significance of the Olmec style and its implications for Early Formative interregional interaction within Mesoamerica, one particular type of artifact—the hollow figurine—is examined. A definition of the Olmec style is provided based on Gulf Coast monumental art. One of several contemporaneous hollow-figurine types—“hollow babies” (Group 1)—is consistent with a Gulf Coast–based definition of the Olmec style. Fragments of Group 1 hollow figurines from across Mesoamerica are examined, revealing concentrations at a Gulf Coast center and, to a lesser extent, sites in southern Mexico. Rather than the primarily funerary function previously suggested for these objects, contextual data suggest multivalent meanings and functions. Group 2 figurines are related but different; variation appears in both the distribution of Group 2 fragments across Mesoamerica and their use. Available evidence suggests limited access to hollow figurines of both groups compared with contemporaneous solid figurines. A previous assertion that “hollow babies” were primarily produced and consumed in Central Mexico is rejected, and the significance of the differences among these hollow-figurine types is considered.

The Moon in Meso-America

2020 ◽  
Author(s):  
Susan Milbrath
Keyword(s):  
Classic Maya ◽  
16Th Century ◽  
Central Mexico ◽  
Ancient Maya ◽  
The Moon ◽  
Southern Mexico ◽  
Spanish Conquest ◽  
Ethnographic Studies ◽  
Lunar Cycles ◽  
Postclassic Maya

What is known about the Moon among the ancient Maya of southern Mexico and Guatemala and the Nahuatl-speaking people of central Mexico, especially the Aztecs who lived in the Valley of Mexico and their neighbors in Puebla-Tlaxcala Valley, has been obtained from records related to astronomy and lunar cycles inscribed on Classic Maya monuments dating between ad 250 and 850/900. Modern scholarship focusing on the mathematical units and glyphic writing has helped in deciphering the records. Postclassic Maya codices dating from 1300 to 1500, sent to Europe shortly after the Spanish conquest, also have lunar tables that have been decoded by study of the lunar cycles and glyphs. Painted books dating prior to the conquest in 1521 are also known from central Mexico, but these can only be understood with the help of books that were painted by native artists later in the 16th century and annotated with texts written in Spanish and Nahuatl. These glosses provide information about lunar deities and beliefs about the Moon. Furthermore, knowledge of the Moon in Meso-America is greatly enhanced by ethnographic studies and study of iconographic representations of deities representing different lunar roles and phases.

A revision of the New World Euphorbia adiantoides complex (Euphorbiaceae)

Phytotaxa ◽  
2018 ◽  
Vol 350 (3) ◽  
pp. 201
Author(s):  
VICTOR W. STEINMANN ◽  
PABLO CARRILLO-REYES
Keyword(s):  
New World ◽  
Phylogenetic Analyses ◽  
The Other ◽  
Central Mexico ◽  
Northern Population ◽  
Southern Mexico ◽  
Sierra Madre ◽  
Peripatric Speciation ◽  
Nuclear Its ◽  
Multiple Samples

The Euphorbia adiantoides complex is here considered to consist of four species. This group is readily distinguished from other New World Euphorbia by the combination of two unusual features: entire styles with capitate stigmas and dichasial bracts with relatively long, filiform stipules. Euphorbia sonorae is reduced to a synonym of Euphorbia adiantoides, a taxon disjunctly distributed between Mexico and western South America. The other species of the complex are all restricted to Mexico. Two of these are described as new: E. zamudioi, an endemic to the Sierra Madre Oriental, and E. breedlovei, which is widespread in central and southern Mexico. A key to distinguish the species is provided, as too are data concerning their morphology, distribution, habitat, phenology, common names, and uses. Phylogenetic analyses were conducted using the nuclear ITS and the chloroplast psbA-trnH regions and including multiple samples of each species. The phylogenetic results are not always congruent with morphology, and of the four species herein recognized, only Euphorbia zamudioi is suggested to form an exclusive, well-supported lineage. This species is nested within E. breedlovei, and two collections of E. breedlovei from central Mexico are more closely related to E. zamudioi than they are to other E. breedlovei from southern Mexico. We hypothesize that E. zamudioi arose through peripatric speciation, in which a northern population of E. breedlovei became reproductively isolated and morphologically differentiated from the remainder of the populations of E. breedlovei.

The Aztec Empire

2021 ◽  
pp. 671-691
Author(s):  
Michael E. Smith ◽  
Maëlle Sergheraert
Keyword(s):  
Twelfth Century ◽  
Central Mexico ◽  
Small City ◽  
Urban Center ◽  
Southern Mexico ◽  
Indirect Control ◽  
Imperial Capital ◽  
City States ◽  
Aztec Empire

The Aztec Empire (1428–1521 CE) grew out of a system of small city-states that covered central Mexico starting in the twelfth century CE. Armies from the capital, Tenochtitlan, conquered over 500 polities throughout what is today central and southern Mexico. The empire employed indirect control of its provinces, with inner provinces paying regular taxes and outer provinces acting as client states to guard imperial borders. Few or no services were provided by the empire in provincial areas. The imperial capital, Tenochtitlan, was a large, wealthy, and complex urban center of 200,000 inhabitants. The Aztec Empire came to an end with conquest by Hernando Cortés in 1521.

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