There is some uncertainty about its taxonomic affiliation. For some time it was united with other taxa of aquatic birds from around the Cretaceous-Paleocene boundary in the form taxon "Graculavidae", the supposed "transitional shorebirds", but this group is now known to be artificial. Some sources erroneously claim it was allied with ducks and geese. The reason for this is that the early anseriformAnatalavis rex was for some time included in Telmatornis. Hope (2002), however, noted that Telmatornis shares many characters with members of Charadriiformes, the ancient and diverse group of modern birds that includes for example gulls, auks and waders.[1]
A cladistic analysis of the forelimb skeleton (Varricchio 2002) found it highly similar to the great crested grebe and unlike the painted buttonquail (now known to be a basal charadriiform lineage), the black-necked stilt (a more advanced charadriiform), or the limpkin (a member of the Grui suborder of Gruiformes), namely in that its dorsal condyle of the humerus was not angled at 20°–30° away from long axis of the humerus. The analysis did not result in a phylogenetic pattern but rather grouped some birds with similar wing shapes together while others stood separate. It is thus unknown whether this apparent similarity to grebes represents an evolutionary relationship, or whether Telmatornis simply had a wing convergent on that of grebes and moved it like they do.[3]
Referencesedit
^ abHope, 2002. The Mesozoic radiation of Neornithes. in Chiappe and Witmer, eds. Mesozoic Birds: Above the Heads of Dinosaurs. 339-388.
^*Varricchio, David J. (2002): A new bird from the Upper Cretaceous Two Medicine Formation of Montana. Canadian Journal of Earth Sciences39(1): 19-26. HTML abstract[dead link]
This prehistoric bird article is a stub. You can help Wikipedia by expanding it.
telmatornis, valid, prehistoric, bird, genus, which, been, placed, charadriiformes, apparently, lived, late, cretaceous, remains, were, found, early, maastrichtian, million, years, navesink, formation, jersey, single, species, included, today, priscus, tempora. Telmatornis is a valid prehistoric bird genus which has been placed in Charadriiformes 1 2 It apparently lived in the Late Cretaceous its remains were found in the early Maastrichtian c 71 68 million years ago Navesink Formation of New Jersey A single species is included today Telmatornis priscus TelmatornisTemporal range Late Cretaceous Maastrichtian Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder CharadriiformesGenus TelmatornisMarsh 1870Species T priscusBinomial name Telmatornis priscusMarsh 1870SynonymsTelmatornis affinis Marsh 1870 Graculavus pumilis Marsh 1872There is some uncertainty about its taxonomic affiliation For some time it was united with other taxa of aquatic birds from around the Cretaceous Paleocene boundary in the form taxon Graculavidae the supposed transitional shorebirds but this group is now known to be artificial Some sources erroneously claim it was allied with ducks and geese The reason for this is that the early anseriform Anatalavis rex was for some time included in Telmatornis Hope 2002 however noted that Telmatornis shares many characters with members of Charadriiformes the ancient and diverse group of modern birds that includes for example gulls auks and waders 1 A cladistic analysis of the forelimb skeleton Varricchio 2002 found it highly similar to the great crested grebe and unlike the painted buttonquail now known to be a basal charadriiform lineage the black necked stilt a more advanced charadriiform or the limpkin a member of the Grui suborder of Gruiformes namely in that its dorsal condyle of the humerus was not angled at 20 30 away from long axis of the humerus The analysis did not result in a phylogenetic pattern but rather grouped some birds with similar wing shapes together while others stood separate It is thus unknown whether this apparent similarity to grebes represents an evolutionary relationship or whether Telmatornis simply had a wing convergent on that of grebes and moved it like they do 3 References edit a b Hope 2002 The Mesozoic radiation of Neornithes in Chiappe and Witmer eds Mesozoic Birds Above the Heads of Dinosaurs 339 388 Telmatornis Marsh 1870 shorebird Fossilworks Retrieved 3 February 2023 from the Paleobiology Database a href Template Cite web html title Template Cite web cite web a CS1 maint postscript link Varricchio David J 2002 A new bird from the Upper Cretaceous Two Medicine Formation of Montana Canadian Journal of Earth Sciences 39 1 19 26 HTML abstract dead link nbsp This prehistoric bird article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Telmatornis amp oldid 1153750493, wikipedia, wiki, book, books, library,
