Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Protoavis> ?p ?o. }
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- Protoavis abstract "Protoavis (meaning "first bird") is a problematic taxon of archosaurian known from fragmentary remains from Late Triassic Norian stage deposits near Post, Texas. Much controversy remains over the animal, and there are many different interpretations of what Protoavis actually is. When it was first described, the fossils were described as being from a primitive bird which, if the identification is valid, would push back avian origins some 60-75 million years. The original describer of Protoavis texensis, Sankar Chatterjee of Texas Tech University, interpreted the type specimen to have come from a single animal, specifically a 35 cm tall bird that lived in what is now Texas, USA, around 210 million years ago. Though it existed far earlier than Archaeopteryx, its skeletal structure is allegedly more bird-like. Protoavis has been reconstructed as a carnivorous bird that had teeth on the tip of its jaws and eyes located at the front of the skull, suggesting a nocturnal or crepuscular lifestyle. Reconstructions usually depict it with feathers, as Chatterjee originally interpreted structures on the arm to be quill knobs, the attachment point for flight feathers found in some modern birds and non-avian dinosaurs. However, re-evaluation of the fossil material by subsequent authors such as Lawrence Witmer have been inconclusive regarding whether or not these structures are actual quill knobs.However, this description of Protoavis assumes that Protoavis has been correctly interpreted as a bird. Almost all palaeontologists doubt that Protoavis is a bird, or that all remains assigned to it even come from a single species, because of the circumstances of its discovery and unconvincing avian synapomorphies in its fragmentary material. When they were found at the Tecovas and Bull Canyon Formations in the Texas panhandle in 1984, in a sedimentary strata of a Triassic river delta, the fossils were a jumbled cache of disarticulated bones that may reflect an incident of mass mortality following a flash flood.".
- Protoavis thumbnail ProtoavisDrawing.jpg?width=300.
- Protoavis wikiPageExternalLink index.php?title=Protoavis.
- Protoavis wikiPageID "672740".
- Protoavis wikiPageRevisionID "583739446".
- Protoavis authority "Chatterjee, 1991".
- Protoavis colwidth "30".
- Protoavis displayParents "3".
- Protoavis fossilRange "Late Triassic,".
- Protoavis grandparentAuthority 1991_in_paleontology.
- Protoavis grandparentAuthority Sankar_Chatterjee.
- Protoavis group "Note".
- Protoavis hasPhotoCollection Protoavis.
- Protoavis imageAlt "The fossil of a bird-like animal on a black background. A foot, tail, and upper body are present. The head has a large beak while the arm bones are folded over to look like a bird's wings.".
- Protoavis imageCaption "Protoavis texensis paratype , a small individual.".
- Protoavis imageWidth "250".
- Protoavis name "Protoavis".
- Protoavis parentAuthority "Chatterjee, 1991".
- Protoavis typeSpecies "Protoavis texensis".
- Protoavis typeSpeciesAuthority "Chatterjee, 1991".
- Protoavis subject Category:Basal_Ornithurae.
- Protoavis subject Category:Fossil_taxa_described_in_1991.
- Protoavis subject Category:Nomina_dubia.
- Protoavis subject Category:Triassic_dinosaurs.
- Protoavis subject Category:Triassic_reptiles.
- Protoavis type Bird.
- Protoavis comment "Protoavis (meaning "first bird") is a problematic taxon of archosaurian known from fragmentary remains from Late Triassic Norian stage deposits near Post, Texas. Much controversy remains over the animal, and there are many different interpretations of what Protoavis actually is. When it was first described, the fossils were described as being from a primitive bird which, if the identification is valid, would push back avian origins some 60-75 million years.".
- Protoavis label "Protoavis texensis".
- Protoavis label "Protoavis".
- Protoavis label "Protoavis".
- Protoavis label "Protoavis".
- Protoavis label "Protoavis".
- Protoavis label "Protoawis".
- Protoavis label "Протоавис".
- Protoavis label "プロトアビス".
- Protoavis label "原鳥屬".
- Protoavis sameAs Protoavis.
- Protoavis sameAs Protoavis.
- Protoavis sameAs Protoavis.
- Protoavis sameAs Protoavis_texensis.
- Protoavis sameAs プロトアビス.
- Protoavis sameAs Protoavis.
- Protoavis sameAs Protoawis.
- Protoavis sameAs m.031pym.
- Protoavis sameAs Q284477.
- Protoavis sameAs Q284477.
- Protoavis wasDerivedFrom Protoavis?oldid=583739446.
- Protoavis depiction ProtoavisDrawing.jpg.
- Protoavis isPrimaryTopicOf Protoavis.
