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The prehistoric bony fish of Texas are known largely from Cretaceous rocks. Fossils include mostly teeth, vertebrae, and scales, although sometimes well preserved skeletons are found in the Austin Chalk member. [6] During the Turonian Texas was home to the fish Pachyrhizodus leptopsis. [15] Early Cretaceous heart urchins and biscuit urchins.
The Gila River (/ ˈhiːlə /; O'odham [Pima]: Keli Akimel or simply Akimel, Quechan: Haa Siʼil, Maricopa language: Xiil[4]) is a 649-mile-long (1,044 km) [2] tributary of the Colorado River flowing through New Mexico and Arizona in the United States. The river drains an arid watershed of nearly 60,000 square miles (160,000 km 2) that lies ...
The Brazos River (/ ˈ b r æ z ə s / ⓘ BRAZ-əs, Spanish:), called the Río de los Brazos de Dios (translated as "The River of the Arms of God") by early Spanish explorers, is the 14th-longest river in the United States at 1,280 miles (2,060 km) from its headwater source at the head of Blackwater Draw, Roosevelt County, New Mexico [2] to its mouth at the Gulf of Mexico with a 45,000-square ...
November 16, 1907. Designated NMSRCP. May 21, 1971. Gila Cliff Dwellings National Monument is a U.S. National Monument created to protect Mogollon cliff dwellings in the Gila Wilderness on the headwaters of the Gila River in southwest New Mexico. The 533-acre (2.16 km 2) national monument was established by President Theodore Roosevelt through ...
A map of the pre-historic cultures of the American Southwest ca 1200 CE. Several Hohokam settlements are shown. The agricultural practices of the Native Americans inhabiting the American Southwest, which includes the states of Arizona and New Mexico plus portions of surrounding states and neighboring Mexico, are influenced by the low levels of precipitation in the region.
Shaded relief map of the Llano Estacado. Texas contains a wide variety of geologic settings. The state's stratigraphy has been largely influenced by marine transgressive-regressive cycles during the Phanerozoic, with a lesser but still significant contribution from late Cenozoic tectonic activity, as well as the remnants of a Paleozoic mountain range.
The location of the state of New Mexico. Paleontology in New Mexico refers to paleontological research occurring within or conducted by people from the U.S. state of New Mexico. The fossil record of New Mexico is exceptionally complete and spans almost the entire stratigraphic column. [1] More than 3,300 different kinds of fossil organisms have ...
El Malpais National Monument and National Conservation Area. El Malpais National Monument is a National Monument located in western New Mexico, in the Southwestern United States. [3] The name El Malpais is from the Spanish term Malpaís, meaning badlands, due to the extremely barren and dramatic volcanic field that covers much of the park's area.