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A new member of the family Plotopteridae (Aves) from the late Oligocene of British Columbia, Canada
The discovery of an avian fossil, in the upper Oligocene Sooke Formation rocks on southwestern Vancouver Island, British Columbia, is the first example from Canada of the Plotopteridae, an extinctExpand
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Flightless Diving Duck (Aves, Anatidae) from the Pleistocene of Shiriya, Northeast Japan
ABSTRACT A flightless fossil duck (Aves, Anatidae), Shiriyanetta hasegawai, gen. et sp. nov., is described as a member of the Shiriya local fauna, a middle—late Pleistocene marine and terrestrialExpand
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Ontogenetic change of morphology and surface texture of long bones in the Gray Heron (Ardea cinerea, Ardeidae)
Although the importance of assessing ontogenetic age or developmental stage of fossil materials is widely recognized, information on avian postnatal skeletal ontogeny, which forms a basis for ageingExpand
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Ontogeny of Surface Texture of Limb Bones in Modern Aquatic Birds and Applicability of Textural Ageing
Despite its importance in various disciplines, a general method to assess ontogenetic ages of skeletal and fossil specimens has been lacking for birds. Although the textural ageing method wasExpand
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Clade‐specific evolutionary diversification along ontogenetic major axes in avian limb skeleton
  • Junya Watanabe
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 December 2018
The evolutionary diversification of birds has been facilitated by specializations for various locomotor modes, with which the proportion of the limb skeleton is closely associated. However, recentExpand
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Ontogeny of macroscopic morphology of limb bones in modern aquatic birds and their implications for ontogenetic ageing
Although the assessment of ontogenetic stage of fossil and skeletal specimens (ontogenetic ageing) plays fundamental roles in avian paleontology, detailed information of postnatal ontogeny ofExpand
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Pleistocene fossils from Japan show that the recently extinct Spectacled Cormorant (Phalacrocorax perspicillatus) was a relict
ABSTRACT Despite increasing attention to geologically recent extinctions in the ocean, little information is available on natural distributions of extinct species before contact with humans. In theExpand
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Quantitative discrimination of flightlessness in fossil Anatidae from skeletal proportions
ABSTRACT Flight ability has been lost many times in the family Anatidae (ducks, geese, swans, and allies), and this provides unique insights into the morphological and ecological evolution of theExpand
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Two species of Uria (Aves: Alcidae) from the Pleistocene of Shiriya, northeast Japan, with description and body mass estimation of a new species
The genus Uria includes volant wing-propelled diving birds widely distributed in the Arctic and boreal waters in the Northern Hemisphere. It includes two Recent species, U. lomvia and U. aalge, whichExpand
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Comparative ontogeny of avian limb skeleton: implications for ontogenetic ageing and evolutionary variability, with special emphasis on the evolution of avian flightlessness
Organismal evolution is a continuing process of modifications of ontogeny through phylogeny. Heterochrony, evolutionary changes in timing and rates of developmental events, has long been a centralExpand
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