The San Luis Valley is a region in south-central Colorado with a small portion overlapping into New Mexico. The Rio Grande with headwaters in the San Juan Mountains about seven miles east of Silverton, Colorado flows through the San Luis Valley and then south into New Mexico. It contains 6 counties and portions of 3 others. The San Luis Valley was ceded to the United States by Mexico following the Mexican–American War. Hispanic settlers began moving north and settling in the valley after the United States made a treaty with the Utes and established a fort. Prior to the Mexican war the Spanish and Mexican governments had reserved the valley to the Utes, their allies. During the 19th century Anglo settlers settled in the valley and engaged in mining, ranching, and irrigated agriculture. Today the valley has a diverse Anglo and Hispanic population.
Oaxaca is a state in Southwest Mexico that is divided into 570 municipalities, more than any other state. According to Article 113 of the state's constitution, the municipalities are grouped into 30 judicial and tax districts to facilitate the distribution of the state's revenues, although they may not currently function as per their intended purpose. It's the only entity in Mexico with this particular organization. According to the 2020 Mexican Census, it is the tenth most populated state with 4,132,148 inhabitants and the 5th largest by land area spanning 93,757.6 square kilometres (36,200.0 sq mi).
The Cutler Formation or Cutler Group is a rock unit that is spread across the U.S. states of Arizona, northwest New Mexico, southeast Utah and southwest Colorado. It was laid down in the Early Permian during the Wolfcampian stage. Its subunits, therefore, are variously called formations or members depending on the publication. Members :
Nuevo San Juan Parangaricutiro or Parangaricutirimícuaro is a small village in the Mexican state of Michoacán near the Parícutin volcano. It is the municipal seat for the municipality of Nuevo Parangaricutiro. The city is called "Nuevo" because the original San Juan Parangaricutiro was destroyed during the formation of the Parícutin volcano in 1943. Along with the village of Parícutin, San Juan Parangaricutiro was buried beneath ash and lava. The top of the church of old San Juan Parangaricutiro still protrudes from the volcanic deposits.
The Kirtland Formation is a sedimentary geological formation.
The Fruitland Formation is a geologic formation found in the San Juan Basin in the states of New Mexico and Colorado, in the United States of America. It contains fossils dating it to the Campanian age of the late Cretaceous.
The San Juan Basin is a geologic structural basin located near the Four Corners region of the Southwestern United States. The basin covers 7,500 square miles and resides in northwestern New Mexico, southwestern Colorado, and parts of Utah and Arizona. Specifically, the basin occupies space in the San Juan, Rio Arriba, Sandoval, and McKinley counties in New Mexico, and La Plata and Archuleta counties in Colorado. The basin extends roughly 100 miles (160 km) N-S and 90 miles (140 km) E-W.
The Summerville Formation is a geological formation in New Mexico, Colorado, and Utah of the Southwestern United States. It dates back to the Oxfordian stage of the Late Jurassic.
The Nacimiento Formation is a sedimentary rock formation found in the San Juan Basin of western New Mexico. It has an age of 61 to 65.7 million years, corresponding to the early and middle Paleocene. The formation has yielded an abundance of fossils from shortly after the Cretaceous-Paleogene extinction event that provide clues to the recovery and diversification of mammals following the extinction event.
Denazinosuchus is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the Upper Cretaceous Fruitland Formation and Kirtland Formation of the San Juan Basin, New Mexico. It is the most abundant and readily identifiable mesoeucrocodylian of the San Juan Basin, mostly due to its distinctive subrectangular, flattened, and sparsely pitted bony armor. It was first described in 1932 by Carl Wiman on the basis of a skull as a species of Goniopholis, G. kirtlandicus. Spencer G. Lucas and Robert M. Sullivan redescribed the species in 2003 and gave it its own genus, Denazinosuchus. To date, Denazinosuchus is only known from skull material, armor, and a thigh bone.
The Pictured Cliffs Formation is a Campanian geologic formation in the San Juan Basin of New Mexico. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.
The Point Lookout Sandstone is a Cretaceous bedrock formation occurring in New Mexico and Colorado.
The Menefee Formation is a lower Campanian geologic formation found in Colorado and New Mexico, United States.
The Ojo Alamo Formation is a geologic formation in New Mexico spanning the Mesozoic/Cenozoic boundary.
Chedighaii hutchisoni was a bothremydid turtle that lived during the Late Cretaceous. It was named in 2006 by Gaffney et al. for a specimen, KUVP 14765, consisting only of a skull. The specimen was found in the San Juan Basin of New Mexico in the Hunter Wash Member of the Kirtland Formation. The formation is one of many formations that are from the Kirtlandian land-vertebrate age, and date from 74.0 million years ago. The holotype skull is nearly complete. No skeleton or carapace is known, but the material of "Naiadochelys" ingravata might be assignable to C. hutchisoni.
The Cliff House Sandstone is a late Campanian stratigraphic unit comprising sandstones in the western United States.
The San Jose Formation is an Early Eocene geologic formation in the San Juan Basin of New Mexico and Colorado.
The Burro Canyon Formation is an Early Cretaceous Period sedimentary geologic formation, found in western Colorado, the Chama Basin and eastern San Juan Basin of northern New Mexico, and in eastern Utah, US.
San Juan Formation may refer to:
Dynamoterror is a genus of tyrannosaurid theropod dinosaur that lived in what is now New Mexico during the Late Cretaceous Period, approximately 78 million years ago. The type species is Dynamoterror dynastes. The generic name is derived from the Greek word dynamis (δύναμις) meaning "power" and the Latin word terror. The specific name is derived from δυνάστης, "ruler".
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