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Adelalopus
''Adelalopus'' is an extinct genus of palaelodid bird from the lowermost Oligocene of Belgium. It is the oldest member of its family and the largest known palaelodid from Europe, slightly larger than ''Megapaloelodus goliath''. It contains a single species, ''Adelalopus hoogbutseliensis''. History and naming The remains of ''Adelalopus'' were discovered at the locality of Hoogbutsel, Belgium, approximately east of Brussels and are stored at the Museum of Natural Sciences of Belgium. The type specimen IRScNB Av 71 consists of an incomplete furcula, parts of a coracoid, a scapula, the distal end of an ulna and the shaft of a radius as well as an incomplete tarsometatarsus. A second specimen (IRScNB Av 72) is referred to the genus, consisting of the extremitas omalis of the left coracoid. The same element is present for the right coracoid in the holotype. All material included in the type specimen is considered to be from a single individual based on the proximity of the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megapaloelodus
''Megapaloelodus'' is an extinct genus of stem flamingo of the family Palaelodidae. ''Megapaloelodus'' is primarily known from Miocene America, from South Dakota and Oregon in the north to Argentina in the south, but the species ''Megapaloelodus goliath'' was found in Europe. Additionally, one unnamed species was discovered in Miocene sediments from Namibia. Due to a lack of skull material, little can be said about the ecology of ''Megapaloelodus''. Species of this genus are typically larger than those of ''Palaelodus'' and appear to have inhabited similar brackish lake environments. Additionally, they may have been capable of "locking" their legs in a standing position. History and naming ''Megapaloelodus'' was named by American Alden H. Miller in 1944 on the basis of a fossil femur and tarsometatarsus collected from the lower Miocene Rosebud Formation of South Dakota. Recognizing similarities to fossils of ''Palaelodus'', Miller described the material as a new genus of phoeni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaelodidae
Palaelodidae is a family of extinct birds in the group Phoenicopteriformes, which today is represented only by the flamingos. They have been described as "swimming flamingos." They can be considered evolutionarily, and ecologically, intermediate between flamingos and grebes. Three genera are recognised: * †'' Adelalopus'' (Mayr & Smith 2002), called the "stout-legged flamingos" (Borgloon Early Oligocene of Hoogbutsel, Belgium) ** †'' Adelalopus hoogbutseliensis'' (Mayr and Smith 2002) * †''Palaelodus'' (Milne-Edwards 1863) Pliogrus.html"_;"title="'Pliogrus">'Pliogrus''_(Lambrecht_1933)(Middle_Oligocene_–?_Middle_Pleistocene) **_†''Palaelodus_ambiguus.html" ;"title="Pliogrus">'Pliogrus'' (Lambrecht 1933)">Pliogrus.html" ;"title="'Pliogrus">'Pliogrus'' (Lambrecht 1933)(Middle Oligocene –? Middle Pleistocene) ** †''Palaelodus ambiguus">P. ambiguus'' (Milne-Edwards 1863) [''Grus problematica'' (Milne-Edwards 1871); ''Probalearica problematica'' (Milne-Edwards 1871); '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarsometatarsus
The tarsometatarsus is a bone that is only found in the lower leg of birds and some non-avian dinosaurs. It is formed from the fusion of several bones found in other types of animals, and homologous to the mammalian tarsus (ankle bones) and metatarsal bones (foot). Despite this, the tarsometatarsus of birds is often referred to as just the shank, tarsus or metatarsus. Tarsometatarsal fusion occurred in several ways and extents throughout bird evolution. Specifically, in Neornithes (modern birds), although the bones are joined along their entire length, the fusion is most thorough at the distal (metatarsal) end. In the Enantiornithes, a group of Mesozoic avialans, the fusion was complete at the proximal (tarsal) end, but the distal metatarsi were still partially distinct. While these fused bones are best known from birds and their relatives, avians are neither the only group nor the first to possess tarsometatarsi. In a remarkable case of parallel evolution, they were also pres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoenicopteriformes
Phoenicopteriformes is a group of water birds which comprises flamingos and their extinct relatives. Flamingos (Phoenicopteriformes) and the closely related grebes ( Podicipedidae) are contained in the parent clade Mirandornithes. Fossil record Flamingos and their relatives are well attested in the fossil record, with the first unequivocal member of the Phoenicopteridae, ''Elornis'' known from the late Eocene epoch. Relation to extinct palaelodids The Palaelodidae – an extinct family of peculiar "swimming flamingos" – are believed to be the closest relatives of the modern flamingos, with the extinct genus ''Juncitarsus'' slightly more primitive than the clade which contains flamingos and grebes (Mirandornithes). The foot and wing anatomy of fossil palaelodids suggests that they were surface-swimming birds, rather than grebe-like divers as was proposed in the past. Whether swimmers or divers, that both primitive phoenicopteriforms and their closest relatives, the gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coscoroba Swan
The coscoroba swan (''Coscoroba coscoroba'') is a species of waterfowl in subfamily Anserinae of the family Anatidae.HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022 It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, Uruguay, and the Falkland Islands.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022 Taxonomy and systematics The coscoroba swan's placement within the family Anatidae is not settled. A 2014 genetic study posited a phylogenetic relationship between thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirandornithes
Mirandornithes () is a clade that consists of flamingos and grebes. Many scholars use the term Phoenicopterimorphae for the superorder containing flamingoes and grebes. Determining the relationships of both groups has been problematic. Flamingos had been placed with numerous branches within Neognathae, such as ducks and storks. The grebes had been placed with the loons. However recent studies have confirmed these two branches as sister groups. Both primitive phoenicopteriformes and their closest relatives, the grebes, were highly aquatic.Mayr, G. (2014) The Eocene ''Juncitarsus'' – its phylogenetic position and significance for the evolution and higher-level affinities of flamingos and grebes. ''Comptes Rendus Palevol''. 13(1):9-18. https://doi.org/10.1016/j.crpv.2013.07.005 This indicates that the entire mirandornithe group evolved from aquatic, probably swimming ancestors. Synapomorphies According to Mayr (2004) and Sangster (2005) there are at least twelve distinct morpholo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncitarsus
''Juncitarsus'' is an extinct genus of wading birds from the Eocene of the United States and Germany. Though previously considered a kind of prehistoric flamingo,Olson, S.L. And Feduccia, A. 1980. Relationship and evolution of flamingos (Aves: Phoenicopteridae). Smithsonian Contributions to Zoology 316:1-73. it is likely a more primitive member of the flamingo lineage, possibly a relative of the group which contains both flamingos and grebes (Mirandornithes Mirandornithes () is a clade that consists of flamingos and grebes. Many scholars use the term Phoenicopterimorphae for the superorder containing flamingoes and grebes. Determining the relationships of both groups has been problematic. Flamingos ...).Mayr, G. (2004). Morphological evidence for sister group relationship between flamingos (Aves: Phoenicopteridae) and grebes (Podicipedidae). Zoological Journal of the Linnean Society, 140(2), 157–169. References Eocene birds of Europe Extinct birds of Europe Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavicle
The clavicle, or collarbone, is a slender, S-shaped long bone approximately 6 inches (15 cm) long that serves as a strut between the shoulder blade and the sternum (breastbone). There are two clavicles, one on the left and one on the right. The clavicle is the only long bone in the body that lies horizontally. Together with the shoulder blade, it makes up the shoulder girdle. It is a palpable bone and, in people who have less fat in this region, the location of the bone is clearly visible. It receives its name from the Latin ''clavicula'' ("little key"), because the bone rotates along its axis like a key when the shoulder is abducted. The clavicle is the most commonly fractured bone. It can easily be fractured by impacts to the shoulder from the force of falling on outstretched arms or by a direct hit. Structure The collarbone is a thin doubly curved long bone that connects the arm to the trunk of the body. Located directly above the first rib, it acts as a strut to k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaelodus
''Palaelodus'' is an extinct genus of bird of the Palaelodidae family, distantly related to flamingos. They were slender birds with long, thin legs and a long neck resembling their modern relatives, but likely lived very different livestyles. They had straight, conical beaks not suited for filter feeding and legs showing some similarities to grebes. Their precise lifestyle is disputed, with researchers in the past suggesting they may have been divers, while more recent research suggests they may have used their stiff toes as paddles for swimming while feeding on insect larvae and snails. This behavior may have been key in later phoenicopteriforms developing filterfeeding bills. The genus includes between five to eight species and is found across Europe, Australia, New Zealand, Asia and possibly South America. However some argue that most of the taxa named from Europe simply represent differently sized individuals of one single species. ''Palaelodus'' was most abundant during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anagram
An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. For example, the word ''anagram'' itself can be rearranged into ''nag a ram'', also the word ''binary'' into ''brainy'' and the word ''adobe'' into ''abode''. The original word or phrase is known as the ''subject'' of the anagram. Any word or phrase that exactly reproduces the letters in another order is an anagram. Someone who creates anagrams may be called an "anagrammatist", and the goal of a serious or skilled anagrammatist is to produce anagrams that reflect or comment on their subject. Examples Anagrams may be created as a commentary on the subject. They may be a parody, a criticism or satire. For example: * "New York Times" = " monkeys write" * "Church of Scientology" = "rich-chosen goofy cult" * "McDonald's restaurants" = " Uncle Sam's standard rot" * "coronavirus" = "carnivorous" * "She Sells Sanctuary" = "Santa; shy, l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radius (bone)
The radius or radial bone is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna. The ulna is usually slightly longer than the radius, but the radius is thicker. Therefore the radius is considered to be the larger of the two. It is a long bone, prism-shaped and slightly curved longitudinally. The radius is part of two joints: the elbow and the wrist. At the elbow, it joins with the capitulum of the humerus, and in a separate region, with the ulna at the radial notch. At the wrist, the radius forms a joint with the ulna bone. The corresponding bone in the lower leg is the fibula. Structure The long narrow medullary cavity is enclosed in a strong wall of compact bone. It is thickest along the interosseous border and thinnest at the extremities, same over the cup-shaped articular surface (fovea) of the head. The trabeculae of the spongy tissue are some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
