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Atrypa
''Atrypa'' is a genus of brachiopod with shells round to short egg-shaped, covered with many fine radial ridges (or costae), that split further out and growth lines perpendicular to the costae and 2-3 times wider spaced. The pedunculate valve is a little convex, but tends to level out or even become slightly concave toward the anterior margin (that is: opposite hinge and pedicle). The brachial valve is highly convex. There is no interarea (that is a flat area bordering the hinge line approximately perpendicular with the rest of the valve) in either valve. ''Atrypa'' was a cosmopolitan and occurred from the late Lower Silurian (Telychian) to the early Upper Devonian (Frasnian). Other sources expand the range from the Late Ordovician to Carboniferous, approximately from 449 to 336 Ma.''Atrypa'' at [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floresta Formation
The Floresta Formation ( es, Formación Floresta, Df) is a geological formation of the Altiplano Cundiboyacense in the Eastern Ranges of the Colombian Andes. The sequence of siltstones, shales, coquinas and sandstone beds dates to the Devonian period; Late Emsian, Eifelian and Early Givetian epochs, and has a maximum thickness of . The unit is highly fossiliferous; brachiopods, bryozoans, gastropods, trilobites, corals and bivalves have been found in the Floresta Formation. Some fragments of Placoderm fish fossils were found in the Floresta Formation, while the overlying Cuche Formation is much richer in fish biodiversity. Etymology The formation was first described as Floresta Series by Olsson and Carter in 1939. The current definition was given by Botero in 1950. The formation is named after Floresta, Boyacá, where the formation outcrops.Mojica & Villarroel, 1984, p.64 Description Lithologies The Floresta Formation is characterized by a lower sequence of shales and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camarotoechia
''Camarotoechia'' is an extinct genus of brachiopods found in Paleozoic strata. Taxonomy Cherkesova (2007) reassigns two taxa, ''"radiata"'' and ''"omaliusi"'', that Nalivkin had placed in ''Camarotoechia'', to '' Sinotectirostrum'' as a new combination for a species and a subspecies respectively. The type of ''Camarotoechia'' is perhaps ''Atrypa congretata'' Conrad, 1841. The species †''Camarotoechia elegans'' is from the Ordovician and Silurian of the Siberian Platform. It includes one subspecies ''Camarotoechia elegans'' forma ''ramosa''. Species The following species of ''Camarotoechia'' have been described:''Camarotoechia'' at Fossilworks.org * ''C. bimesiornata'' * ''C. dotis'' ( |
Boyacá Department
Boyacá () is one of the thirty-two departments of Colombia, and the remnant of Boyacá State, one of the original nine states of the "United States of Colombia". Boyacá is centrally located within Colombia, almost entirely within the mountains of the Eastern Cordillera to the border with Venezuela, although the western end of the department extends to the Magdalena River at the town of Puerto Boyacá. Boyacá borders to the north with the Department of Santander, to the northeast with the Bolivarian Republic of Venezuela and Norte de Santander, to the east with the departments of Arauca and Casanare. To the south, Boyacá borders the department of Cundinamarca and to the west with the Department of Antioquia covering a total area of . The capital of Boyacá is the city of Tunja. Boyacá is known as "The Land of Freedom" because this region was the scene of a series of battles which led to Colombia's independence from Spain. The first one took place on 25 July 1819 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rensselaeria
''Peltandra'', the arrow arums, is a genus of plants in the family Araceae. It is native to the eastern United States, eastern Canada, and Cuba. ;Species # '' Peltandra sagittifolia'' - (Michx.) Morong - Spoon flower or the white arrow arum - southeastern US from eastern Louisiana to Virginia # ''Peltandra virginica'' (L.) Schott - Arum arrow - Cuba, Quebec, Ontario, Oregon, California, Washington; eastern US from Maine to Florida, west to Texas, Kansas, and Minnesota # †'' Peltandra primaeva'' – Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ..., Golden Valley Formation, North Dakota, USA References Aroideae Araceae genera Flora of North America {{Araceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eodictyonella
''Eodictyonella'' is a genus of brachiopod. Very similar, and once proposed as synonymous with, ''Eichwaldia'' Billings 1858. Also resembles '' Isogramma''. References {{Taxonbar, from=Q49000394 Brachiopod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
