Spec's birds are puzzling creatures, but few bird groups have proved as troubling as the xenorniths. After a very confusing history of many different classifications (members of this clade have, at times, been classified as euornithians, oviraptorosaurs and enantiornithians), Xenornithes has finally come to rest near the roots of the avian family tree. Xenorniths are now generally accepted to be very basal birds, related to Confuciusornithidae, a taxon known only from fossils from the Early Cretaceous of East Asia. We can only speculate that two peculiar lower jaws from the Late Cretaceous of the western USA and southern Argentina bridge the gap between Chinese Confuciusornis and the Xenornithes, which are so far only known from the Cenozoic of Spec. They have been known to sound like a cr
| Attributes | Values |
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| rdfs:label
| - Spec Dinosauria: Xenornithes
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| rdfs:comment
| - Spec's birds are puzzling creatures, but few bird groups have proved as troubling as the xenorniths. After a very confusing history of many different classifications (members of this clade have, at times, been classified as euornithians, oviraptorosaurs and enantiornithians), Xenornithes has finally come to rest near the roots of the avian family tree. Xenorniths are now generally accepted to be very basal birds, related to Confuciusornithidae, a taxon known only from fossils from the Early Cretaceous of East Asia. We can only speculate that two peculiar lower jaws from the Late Cretaceous of the western USA and southern Argentina bridge the gap between Chinese Confuciusornis and the Xenornithes, which are so far only known from the Cenozoic of Spec. They have been known to sound like a cr
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| dcterms:subject
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| abstract
| - Spec's birds are puzzling creatures, but few bird groups have proved as troubling as the xenorniths. After a very confusing history of many different classifications (members of this clade have, at times, been classified as euornithians, oviraptorosaurs and enantiornithians), Xenornithes has finally come to rest near the roots of the avian family tree. Xenorniths are now generally accepted to be very basal birds, related to Confuciusornithidae, a taxon known only from fossils from the Early Cretaceous of East Asia. We can only speculate that two peculiar lower jaws from the Late Cretaceous of the western USA and southern Argentina bridge the gap between Chinese Confuciusornis and the Xenornithes, which are so far only known from the Cenozoic of Spec. They have been known to sound like a cross between a parrot and a penguin.
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![[RDF Data]](/fct/images/sw-rdf-blue.png)