New specimens of the early Oligocene Old World hummingbird Eurotrochilus inexpectatus |
| |
Authors: | Gerald Mayr |
| |
Institution: | (1) Forschungsinstitut Senckenberg, Sektion für Ornithologie, Senckenberganlage 25, 60325 Frankfurt am Main, Germany |
| |
Abstract: | New specimens of the early Oligocene (32 million years ago) stem group hummingbird Eurotrochilus inexpectatus Mayr, 2004, are described from the type locality Frauenweiler in Southern Germany. One of these is the second slab of the
holotype, whose existence has been hitherto unknown. The new fossils add significantly to our knowledge of the morphology
of E. inexpectatus and allow more detailed comparisons with other stem and crown group Trochilidae. A new apomorphy of the clade (Eurotrochilus + crown group Trochilidae) is described. With species successively more closely related to the crown group, the temporal
sequence of stem group hummingbirds in Europe indicates an Old World origin of Pan-Trochilidae. E. inexpectatus is the earliest long-beaked stem group hummingbird with hovering capabilities, and absence of modern-type hummingbirds before
the early Oligocene may provide a maximum age for the origin of hummingbird-pollinated plants and the colonization of the
New World by modern-type stem group hummingbirds. |
| |
Keywords: | Fossil birds Oligocene Trochilidae Hummingbirds Eurotrochilus inexpectatus |
本文献已被 SpringerLink 等数据库收录! |
|