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Wyświetlanie 1-2 z 2
Tytuł:
New Miocene sulid birds from Peru and considerations on their Neogene fossil record in the Eastern Pacific Ocean
Autorzy:
Stucchi, M.
Varas-Malca, R.M.
Urbina-Schmitt, M.
Powiązania:
https://bibliotekanauki.pl/articles/22965.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Miocene
sulid bird
bird
Sulidae
Aves
Pelecaniformes
Sula
Ramphastosula
sea bird
evolution
Peru
Neogene
fossil record
Pacific Ocean
Opis:
Boobies and gannets (family Sulidae) are the most specialized plunge divers among seabirds. Their fossil record along the Pacific coast of South America extends to the early Middle Miocene. Here we describe three new species of sulids: Sula brandi sp. nov., Sula figueroae sp. nov., and Ramphastosula aguirrei sp. nov., from the early Late Miocene of the Pisco Formation (Peru). Two of them are relatives of the living genus Sula, which represents medium and large-sized boobies. A new species of the extinct genus Ramphastosula is also described, adding to the discussion of possible alternative feeding strategies among sulids. The fossil record suggests that sympatric sulids exhibit different body sizes at least since the Oligocene epoch, a strategy related with resource partitioning. Furthermore, we find current analysis and knowledge of the fossil record unsuitable to evaluate properly seabird diversity changes through time.
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New specimens of zygodactylid birds from the middle Eocene of Messel, with description of a new species of Primozygodactylus
Autorzy:
Mayr, G
Zelenkov, N.
Powiązania:
https://bibliotekanauki.pl/articles/22099.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
systematics
fossil
paleontology
Germany
Zygodactylidae
Eocene
bird
Messel
new species
Aves
Primozygodactylus
Middle Eocene
zygodactylid bird
Opis:
Representatives of the avian taxon Zygodactylidae are among the most abundant small arboreal birds in the early Palaeogene of the Northern Hemisphere. Still, however, the osteology of these birds, which have recently been shown to be the sister taxon of the Passeriformes, is only incompletely known. Here we describe a new species of Primozygodactylus from the middle Eocene of Messel in Germany. The holotype specimen of P. eunjooae sp. nov. for the first time allows a detailed examination of the distal tarsometatarsus in one of the Messel zygodactylids. It also exhibits exceptionally well−preserved tail feathers which, most notably, are formed by a long central pair of rectrices. We further report on a new specimen of Primozygodactylus major, which is the largest zygodactylid from Messel. Being one of the few dissociated skeletons of Primozygodactylus, the new specimen shows some previously unknown osteological features of this taxon and allows a more detailed comparison with other zygodactylids.
Źródło:
Acta Palaeontologica Polonica; 2009, 54, 1; 15-20
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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