|
|
Post by another specialist on Nov 2, 2005 17:32:15 GMT
Rhynochetos orarius
Balouet & Olson 1989
Holocene of Nepoui Peninsula; Isle of Pines, New Caledonia
Primary materials: Holotype: right tibiotarsus
Secondary materials: Pararypes: rostra, mandibula, crania, quadrata, pterogoïdea, jugale, notarium, vertebrae, pelves, coracoïdea, furculae, scapulae, humeri, radiicarpometacarpi, tibiotarsi, tarsometatarsi
Jean Christophe Balouet & Storrs L. Olson,
Fossil birds from late Quaternary deposits in New Caledonia
Smithsonian Contributions to Zoology 469 (1989): 1-38
Smithsonian Institution Press, Washington D.C.
|
|
|
|
Post by another specialist on Nov 2, 2005 17:33:04 GMT
|
|
|
|
Post by RSN on Mar 26, 2006 0:25:45 GMT
It´s larger than modern kagu, R. jubatus.
|
|
|
|
Post by another specialist on Sept 5, 2008 18:57:04 GMT
Sometimes commonly called the Lowland Kagu or the Ile des Pins Kagu
|
|
|
|
Post by another specialist on Sept 6, 2008 17:15:12 GMT
|
|
|
|
Post by Melanie on Mar 8, 2018 16:57:18 GMT
Some news on the Lowland Kagu It should be best regarded as synonym of the Kagu Jörn Theuerkauf & Roman Gula, 2018 Indirect evidence for body size reduction in a flightless island bird after human colonisationJournal of Ornithology. in press. doi:10.1007/s10336-018-1545-0 Abstract: link.springer.com/article/10.1007%2Fs10336-018-1545-0Rhynochetos orarius has been described from Holocene fossils as the sister species of the smaller extant Kagu Rhynochetos jubatus, a bird endemic to New Caledonia. However, we argue that there has never been evidence justifying the description of R. orarius. Additionally, for biogeographical reasons it seems unlikely that two Kagu species would have evolved in New Caledonia. We therefore synonymise R. orarius and R. jubatus and postulate that Holocene Kagu were larger than today probably because historic hunting by humans targeted larger birds in richer habitat. Free pdf: link.springer.com/content/pdf/10.1007%2Fs10336-018-1545-0.pdf |
|
|
|
Post by another specialist on Mar 9, 2018 6:19:11 GMT
While the kagu is the only living species in the clade Rhynochetidae, a larger species, the lowland kagu (Rhynochetos orarius), has been described from Holocene subfossil remains. The measurements of this species were 15% bigger than Rhynochetos jubatus, with no overlap in measurements except those of the forelimbs. Given that the sites from which R. orarius remains have been recovered are all lowland sites, and that no fossils of R. jubatus have been found in these sites, the scientists that described the fossils have suggested that they represent highland and lowland species respectively. R. orarius is one of many species to have become extinct in New Caledonia after the arrival of humans.[5] The validity of the species has been questioned by some authors,[2] but accepted by others.[6] en.wikipedia.org/wiki/Kagu |
|
|
|
Post by surroundx on Mar 9, 2018 11:23:59 GMT
|
|
