Fossil Birds
نویسندگان
چکیده
منابع مشابه
Eocene fossil is earliest evidence of flower-visiting by birds.
Birds are important pollinators, but the evolutionary history of ornithophily (bird pollination) is poorly known. Here, we report a skeleton of the avian taxon Pumiliornis from the middle Eocene of Messel in Germany with preserved stomach contents containing numerous pollen grains of an eudicotyledonous angiosperm. The skeletal morphology of Pumiliornis is in agreement with this bird having bee...
متن کاملQuantitative estimates of visual performance features in fossil birds.
Eyeball structures such as the lens diameter (LD) and axial length are generally assumed to be highly correlated with optically meaningful parameters. However, these optical constraints on eyeball macroanatomy have never been tested explicitly. Tradeoffs between benefits of improved visual performance and cost of adaptation from an increase of tissue production predict that when eyeball size in...
متن کاملThe Paleogene fossil record of birds in Europe.
The Paleogene (Paleocene-Oligocene) fossil record of birds in Europe is reviewed and recent and fossil taxa are placed into a phylogenetic framework, based on published cladistic analyses. The pre-Oligocene European avifauna is characterized by the complete absence of passeriform birds, which today are the most diverse and abundant avian taxon. Representatives of small non-passeriform perching ...
متن کاملFossil birds from the hawaiian islands: evidence for wholesale extinction by man before Western contact.
Thousands of fossil bird bones from the Hawaiian Islands collected since 1971 include remains of at least 39 species of land birds that are not known to have survived into the historic period; this more than doubles the number of endemic species of land birds previously known from the main islands. Bones were found in deposits of late Quaternary age; most are Holocene and many are contemporaneo...
متن کاملBrains, innovations, tools and cultural transmission in birds, non-human primates, and fossil hominins
Recent work on birds and non-human primates has shown that taxonomic differences in field measures of innovation, tool use and social learning are associated with size of the mammalian cortex and avian mesopallium and nidopallium, as well as ecological traits like colonization success. Here, I review this literature and suggest that many of its findings are relevant to hominin intelligence. In ...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1885
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800152598