Archaeotrogonidae
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Archaeotrogonidae
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of '' Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomor ...
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Archaeotrogonidae
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of '' Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomor ...
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Archaeotrogon Nocturnus
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of '' Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomor ...
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Archaeotrogon
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of '' Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomor ...
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Archaeotrogon Hoffstetteri
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of ''Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomorp ...
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Archaeotrogon Cayluxensis
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to Nightjar, nightjars. The remains of ''Archaeotrogon'' have been found in the Quercy Phosphorites Formation, Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene ''Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, ''Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent evolution, conver ...
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Archaeotrogon Zitteli
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of ''Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomorph ...
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Archaeotrogon Venustus
Archaeotrogonidae is a prehistoric bird family known from the Eocene and Oligocene of Europe. They are members of Strisores, and are thought to be closely related to nightjars. The remains of ''Archaeotrogon'' have been found in the Quercy Phosphorites of France, a geological formation containing Late Eocene and Early Oligocene deposits. They are primarily known from limb bones. Four species are presently considered valid. The Middle Eocene '' Hassiavis'', a more recently described bird from the famous Messel Pit in Germany, is also a member of the family. In 2021, a new genus, '' Archaeodromus'' was described from fossils found in the Early Eocene (Ypresian) aged London Clay, which are the oldest representatives of the family. They were initially thought be prehistoric trogon. However, it is nowadays generally believed that they are not very closely related to these tropical forest birds of our time, but rather convergent. The Archaeotrogonidae actually seem to be Cypselomorph ...
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Nightjar
Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. They are sometimes called goatsuckers, due to the ancient folk tale that they sucked the milk from goats (the Latin for goatsucker is ''caprimulgus''), or bugeaters, their primary source of food being insects. Some New World species are called nighthawks. The English word "nightjar" originally referred to the European nightjar. Nightjars are found all around the world, with the exception of Antarctica and certain island groups such as the Seychelles. They can be found in a variety of habitats, most commonly the open country with some vegetation. They usually nest on the ground, with a habit of resting and roosting on roads. The subfamilies of nightjars have similar characteristics, including small feet, of little use for walking, and long, pointed wings. Typical nightjars, though, have rictal bristles ...
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Nightjar
Nightjars are medium-sized nocturnal or crepuscular birds in the family Caprimulgidae and order Caprimulgiformes, characterised by long wings, short legs, and very short bills. They are sometimes called goatsuckers, due to the ancient folk tale that they sucked the milk from goats (the Latin for goatsucker is ''caprimulgus''), or bugeaters, their primary source of food being insects. Some New World species are called nighthawks. The English word "nightjar" originally referred to the European nightjar. Nightjars are found all around the world, with the exception of Antarctica and certain island groups such as the Seychelles. They can be found in a variety of habitats, most commonly the open country with some vegetation. They usually nest on the ground, with a habit of resting and roosting on roads. The subfamilies of nightjars have similar characteristics, including small feet, of little use for walking, and long, pointed wings. Typical nightjars, though, have rictal bristles ...
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Strisores
Strisores ( ) is a clade of birds that includes the living families and orders Caprimulgidae (nightjars, nighthawks and allies), Nyctibiidae (potoos), Steatornithidae (oilbirds), Podargidae (frogmouths), Apodiformes (swifts and hummingbirds), as well as the Aegotheliformes (owlet-nightjars) whose distinctness was only recently realized. The Apodiformes (which include the "Trochiliformes" of the Sibley-Ahlquist taxonomy) and the Aegotheliformes form the Daedalornithes. Description The material evidence for this group is very equivocal; the most ancient Strisores are quite nondescript tree-dwellers but already tend towards peculiarly apomorphic feet, and no Cretaceous fossils are known. Torpor and other metabolic peculiarities are very frequently found in this group, perhaps more often than in any other bird lineage. The synapomorphies that define this clade are the '' ossa maxillaria'' separated by a large cleft, a mandible with very short ''pars symphysialis'', and '' rami ...
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Cypselomorphae
Strisores ( ) is a clade of birds that includes the living families and orders Caprimulgidae (nightjars, nighthawks and allies), Nyctibiidae (potoos), Steatornithidae (oilbirds), Podargidae ( frogmouths), Apodiformes (swifts and hummingbirds), as well as the Aegotheliformes (owlet-nightjars) whose distinctness was only recently realized. The Apodiformes (which include the "Trochiliformes" of the Sibley-Ahlquist taxonomy) and the Aegotheliformes form the Daedalornithes. Description The material evidence for this group is very equivocal; the most ancient Strisores are quite nondescript tree-dwellers but already tend towards peculiarly apomorphic feet, and no Cretaceous fossils are known. Torpor and other metabolic peculiarities are very frequently found in this group, perhaps more often than in any other bird lineage. The synapomorphies that define this clade are the '' ossa maxillaria'' separated by a large cleft, a mandible with very short ''pars symphysialis'', and '' ...
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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 ...
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