Gila County, ArizonaGila County ( HEE-lə) is a county in the central part of the U.S. state of Arizona. As of the 2020 census, the population was 53,272. The county seat is Globe. Gila County comprises the Payson, Arizona micropolitan statistical area which is included in the greater Phoenix–Mesa, AZ combined statistical area. Gila County contains parts of Fort Apache Indian Reservation and San Carlos Indian Reservation.
Pennsylvanian (geology)Subdivision of the Carboniferous according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitSubperiodTime span formalityFormalLower boundary definitionFirst appearance of the ConodontDeclinognathodus nodiliferus.Lower boundary GSSPArrow Canyon, Nevada, United States36°44′00″N114°46′40″W / 36.7333°N 114.7778°W / 36.7333; -114.7778Lower GSSP ratified1996Upper boundary definitionFirst appearance of the ConodontStreptognathodus isolatus within the morphotypeStreptognathodus wabaunsensis chronocline.Upper boundary GSSPAidaralash, Ural Mountains, Kazakhstan50°14′45″N57°53′29″E / 50.2458°N 57.8914°E / 50.2458; 57.8914Upper GSSP ratified1996The Pennsylvanian ( , also known as Upper Carboniferous or Late Carboniferous) is, on the ICSgeologic timescale, the younger of two subperiods of the Carboniferous Period (or the upper of two subsystems of the Carboniferous System).
ArizonaArizona is a landlocked state in the Southwestern United States, sharing the Four Corners region with Colorado, New Mexico, and Utah. It also borders Nevada to the northwest and California to the west, and shares an international border with the Mexican states of Sonora and Baja California to the south and southwest. Its capital and largest city is Phoenix, which is the most populous state capital and fifth-most populous city in the United States.
GastropodGastropods (; previously known as Univalves; class Gastropoda) are a vast and diverse group of invertebrates within the phylum Mollusca, comprising the animals commonly known as snails and slugs. With an estimated 65,000 to 80,000 living species, they form the second-largest animal class after the insects. The fossil record of gastropods extends back to the Late Cambrian.
BrachiopodBrachiopods (), phylumBrachiopoda, are a phylum of animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalvemolluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories are traditionally recognized, articulate and inarticulate brachiopods.
Kohls Ranch, ArizonaKohls Ranch is a census-designated place (CDP) in Gila County, Arizona, United States. The population was 46 at the 2010 census.
BryozoaPhylum of colonial aquatic invertebrates called moss animalsThe Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquaticinvertebrate animals, nearly all living in sedentary colonies. Typically about 0.5 millimetres (1⁄64 in) long, they have a special feeding structure called a lophophore, a "crown" of tentacles used for filter feeding.
Geological formationA geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers.
FossilPreserved remains or traces of organisms from a past geological ageExamples of animal fossils. Clockwise from top left: Onychocrinus, Palaeosinopa, Gryphaea, and HarpactocarcinusA fossil (from Classical Latinfossilis, lit. 'obtained by digging') is any preserved remains, impression, or trace of any once-living thing from a past geological age.
Geologic time scaleThe geologic time scale or geological time scale describes how geologic time is divided into standardised intervals. It uses the rock record together with the principles of chronostratigraphy to place rock sequences into their relative age positions, and geochronology techniques, such as radiometric dating, to precisely date the boundaries between them.
MolluscaMollusca is a phylum of protostomicinvertebrateanimals, whose members are known as molluscs or mollusks (). 86,600 extantspecies of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed extant species is very high. Many taxa remain poorly studied.
BivalviaClass of molluscsEmpty shell of the giant clam (Tridacna gigas)Empty shells of the sword razor (Ensis ensis)Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquaticmolluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-shells known as valves.*As an Amazon Associate I earn from qualifying purchases.