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Aquilolamnidae
''Aquilolamna'' is an extinct genus of shark-like elasmobranch from the Late Cretaceous (Turonian)-aged Agua Nueva Formation of Mexico. It is currently known to contain only one species, ''A. milarcae'', also known as the eagle shark, and it is classified in its own family Aquilolamnidae, which has been tentatively assigned to the mackerel sharks. Taxonomy While ''Aquilolamna'' is thought to be an elasmobranch, its taxonomy is disputed as, despite the holotype being a well-preserved body fossil, no teeth are known, which are important for determining the taxonomic affinities of fossil sharks; they are thought to have been dislodged when the individual died, although they could be preserved deeper in the matrix. Potential skin impressions preserved with the fossil could potentially be just fossilized bacterial mats. It was tentatively assigned to Lamniformes in its original description based on some morphological similarities to other members of the family. However, due to its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamniformes
The Lamniformes (, from Greek ''lamna'' "fish of prey") are an order (biology), order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, great white, as well as more unusual representatives, such as the goblin shark and megamouth shark. Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill, gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes. Species in two families of Lamniformes – Lamnidae and Alopiidae – are distinguished for maintaining a higher body temperature than the surrounding water. Members of the group include Macro-predator, macropredators, generally of medium-large size, including the largest macropredatory shark ever, the extinct ''Otodus megalodon,'' as well as large planktivores. The oldest member of the group is the small (~ long) carpet shark-lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquilolamna
''Aquilolamna'' is an extinct genus of shark-like elasmobranch from the Late Cretaceous (Turonian)-aged Agua Nueva Formation of Mexico. It is currently known to contain only one species, ''A. milarcae'', also known as the eagle shark, and it is classified in its own family Aquilolamnidae, which has been tentatively assigned to the mackerel sharks. Taxonomy While ''Aquilolamna'' is thought to be an elasmobranch, its taxonomy is disputed as, despite the holotype being a well-preserved body fossil, no teeth are known, which are important for determining the taxonomic affinities of fossil sharks; they are thought to have been dislodged when the individual died, although they could be preserved deeper in the matrix. Potential skin impressions preserved with the fossil could potentially be just fossilized bacterial mats. It was tentatively assigned to Lamniformes in its original description based on some morphological similarities to other members of the family. However, due to its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by both List of U.S. states and territories by area, area (after Alaska) and List of U.S. states and territories by population, population (after California). Texas shares borders with the states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexico, Mexican States of Mexico, states of Chihuahua (state), Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the south and southwest; and has a coastline with the Gulf of Mexico to the southeast. Houston is the List of cities in Texas by population, most populous city in Texas and the List of United States cities by population, fourth-largest in the U.S., while San Antonio is the second most pop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instituto Nacional De Antropología E Historia
The Instituto Nacional de Antropología e Historia (INAH, ''National Institute of Anthropology and History'') is a Mexican federal government bureau established in 1939 to guarantee the research, preservation, protection, and promotion of the prehistoric, archaeological, anthropological, historical, and paleontological heritage of Mexico. Its creation has played a key role in preserving the Mexican cultural heritage. Its current national headquarters are housed in the Palace of the Marqués del Apartado. INAH and the Instituto Nacional de Bellas Artes y Literatura are tasked with cataloging and protecting monuments and buildings regarded as cultural patrimony. INAH is entrusted with 'archaeological' (pre-Hispanic and paleontological) and 'historical' (post-Conquest 16th to 19th centuries) structures, zones and remnants, while INBAL is entrusted with 'artistic' buildings and monuments (properties that are of significant aesthetic value as deemed by a commission). Worthy edif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauricio Fernández Garza
Mauricio Fernández Garza (born April 2, 1950 in Monterrey) is a Mexican politician and businessman directly related to the Fernández Ruiloba wealthy and prominent family; owners of PYOSA (Pigmentos Y Oxidos SA). He was the mayor of San Pedro Garza García, former senator and current member of the board of ''Grupo Alfa'', a Monterrey-based chemical, food and auto-parts producer. He is well known for his art contribution to Nuevo León. Fernández Garza graduated with a bachelor's degree in Industrial Engineering from Purdue University (U.S.), specialized in economics at the Autonomous University of Nuevo León and received a master's degree in business administration from the Monterrey Institute of Technology and Higher Studies. He is the founder and president of ''Comercializadora de Puros'', ''Uniser'' (Havana, Cuba), ''Artesanarte'' and the ''Museo del Ojo'' in García, Nuevo León. In June 2005 he sold one of his companies, ''Especialidades Cerveceras, S.A.'' (the makers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuevo León
Nuevo León () is a state in the northeast region of Mexico. The state was named after the New Kingdom of León, an administrative territory from the Viceroyalty of New Spain, itself was named after the historic Spanish Kingdom of León. With a total land area of 64,555 square kilometers (40,112 square miles), Nuevo León is the 13th largest federal entity in Mexico. The state is bordered by Tamaulipas to the east, Coahuila to the west, and both Zacatecas and San Luis Potosi to the south. To the north, it shares an international border with the U.S. state of Texas. The Laredo-Colombia Solidarity International Bridge is the only vehicular bridge that connects the United States with the state of Nuevo León. It crosses over the Rio Grande (Rio Bravo) between the city of Colombia, Nuevo León, and Laredo, Texas. Nuevo Léon is the seventh largest state in terms of population with an estimated population of 5.78 million people in 2020. The state's most populous city is Monterrey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallecillo Municipality
Vallecillo is a municipality located in the state of Nuevo León, in northeastern Mexico. Location This municipality is located within the coordinates 26º40' latitude north, 99º58' longitude west; it has a 274-metre altitude 274 on the North American Great Plains. It borders the municipality of Anáhuac and Lampazos de Naranjo to north, Parás to east, Sabinas Hidalgo to west and Agualeguas to south. Administrative division The municipal seat is Vallecillo just like other municipalities in the state of Nuevo León where the municipal seat has the same name than the municipality itself. Vallecillo is one of the least populated municipalities in Nuevo León, other settlements in Vallecillo are San Carlos, Matatenas, Colorados de Abajo, Colorados de Arriba, Palo Alto, El Ayaleño and El Álamo. Economy The main economic activities are agriculture and cattle, being the latter of great importance as in the community of San Carlos is located the headquarters of the Lives ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manta Ray
Manta rays are large rays belonging to the genus ''Mobula'' (formerly its own genus ''Manta''). The larger species, '' M. birostris'', reaches in width, while the smaller, '' M. alfredi'', reaches . Both have triangular Pectoral fin#AnchPectoral, pectoral fins, horn-shaped cephalic fins and large, forward-facing mouths. They are classified among the Myliobatiformes (stingrays and relatives) and are placed in the Family (biology), family Myliobatidae (eagle rays). They have the largest brains and brain to body ratio of all fish, and can pass the mirror test. Mantas are found in warm temperate, subtropical and tropical waters. Both species are Pelagic fish, pelagic; ''M. birostris'' Animal migration, migrates across open oceans, singly or in groups, while ''M. alfredi'' tends to be resident and coastal. They are filter feeders and eat large quantities of zooplankton, which they gather with their open mouths as they swim. However, research suggests that the majority of their die ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convergent Evolution
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy. The recurrent evolution of flight is a classic example, as flying insects, birds, pterosaurs, and bats have independently evolved the useful capacity of flight. Functionally similar features that have arisen through convergent evolution are ''analogous'', whereas '' homologous'' structures or traits have a common origin but can have dissimilar functions. Bird, bat, and pterosaur wings are analogous structures, but their forelimbs are homologous, sharing an ancestral state despite serving different functions. The opposite of convergence is divergent evolution, where related species evolve different traits. Convergent evolution is similar to parallel evo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filter Feeder
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fish (including some sharks). Some birds, such as flamingos and certain species of duck, are also filter feeders. Filter feeders can play an important role in clarifying water, and are therefore considered ecosystem engineers. They are also important in bioaccumulation and, as a result, as indicator organisms. Fish Most forage fish are filter feeders. For example, the Atlantic menhaden, a type of herring, lives on plankton caught in midwater. Adult menhaden can filter up to four gallons of water a minute and play an important role in clarifying ocean water. They are also a natural check to the deadly red tide. Extensive article on the role of menhaden in the ecosystem and possible resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planktivore
A planktivore is an aquatic organism that feeds on planktonic food, including zooplankton and phytoplankton. Planktivorous organisms encompass a range of some of the planet's smallest to largest multicellular animals in both the present day and in the past billion years; basking sharks and copepods are just two examples of giant and microscopic organisms that feed upon plankton. Planktivory can be an important mechanism of top-down control that contributes to trophic cascades in aquatic and marine systems. There is a tremendous diversity of feeding strategies and behaviors that planktivores utilize to capture prey. Some planktivores utilize tides and currents to migrate between estuaries and coastal waters; other aquatic planktivores reside in lakes or reservoirs where diverse assemblages of plankton are present, or migrate vertically in the water column searching for prey. Planktivore populations can impact the abundance and community composition of planktonic species through thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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