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Sandcoleids
Sandcoleidae is an extinct family of birds in the order Coliiformes (mousebirds). Fossils of this family have been found in Denmark and the United States. The group may be paraphyletic and is sometimes placed in the separate order Sandcoleiformes. Taxonomy Order COLIIFORMES * Family †Sandcoleidae Houde & Olson 1992 sensu Mayr & Mourer-Chauviré 2004 ** Genus †''Sandcoleus'' Houde & Olson 1992 ***†''S. copiosus'' ** Genus †''Anneavis'' Houde & Olson 1992 ***†''A. anneae'' ** Genus †''Eoglaucidium'' Fischer 1987 ***†''E. pallas'' ** Genus †''Tsidiiyazhi'' Ksepka ''et al.'', 2017 ***†''T. abini'' Some authorities also include ''Selmes absurdipes'', ''Chascacocolius oscitans'' and ''Eobucco brodkorbi'' in this family. References {{Taxonbar, from=Q23091970 Paleocene birds Coliiformes Eocene birds Prehistoric bird families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coliiformes
The mousebirds are birds in the order Coliiformes. They are the sister group to the clade Cavitaves, which includes the Leptosomiformes (the cuckoo roller), Trogoniformes ( trogons), Bucerotiformes ( hornbills and hoopoes), Piciformes ( woodpeckers, toucans, and barbets) and Coraciiformes ( kingfishers, bee-eaters, rollers, motmots, and todies). This group is now confined to sub-Saharan Africa, and it is the only bird order confined entirely to that continent, with the possible exception of turacos which are considered by some as the distinct order Musophagiformes, and the cuckoo roller, which is the only member of the order Leptosomiformes, and which is found in Madagascar but not mainland Africa. Mousebirds had a wider range in the Paleogene, with a widespread distribution in Europe and North America during the Paleocene. Description Mousebirds are slender greyish or brown birds with soft, hairlike body feathers. They are typically about in body length, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsidiiyazhi
''Tsidiiyazhi abini'' () is an extinct relative of the modern mousebirds, found in 2017 in the Nacimiento Formation on ancestral Navajo lands in New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also .... It is the only species in the genus ''Tsidiiyazhi''. It lived between 62.2 and 62.5 million years ago, making it one of the oldest Cenozoic birds yet described. References Coliiformes Danian genera Paleocene birds Prehistoric bird genera {{Coliiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyletic
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic grouping (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of synapomorphies and symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term received currency during the debates of the 1960s and 1970s accompanying the rise of cladistics, having been coined by zoologist Willi Hennig to apply to well-known taxa like Reptilia (reptiles), which is paraphyletic with respect to birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene Birds
The Paleocene ( ), or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by an asteroid impact (Chicxulub impact) and possibly volcanism (Deccan Traps), marked the beginning of the Paleocene and killed off 75% of species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Paleocene, the continents of the Northern Hemisphere w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Birds
The Eocene ( ) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
