鴕鳥屬

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鴕鳥屬學名Struthio),是鴕鳥目下的一個

物種[编辑]

在這個屬之下,有十個已知物種,其中八種已經絕種。There are five more possible species of which trace fossils have been found. They are:

Fossil records and egg shell fragments show that the ancestors of this genus originated about 40-58 million years ago (mya) in the Asiatic steppes as small flightless birds. The earliest fossils from this genus are from the early Miocene (20-25mya), and are from Africa, so it is proposed that they originated there. Then by the middle to late Miocene (5-13mya) they had spread to Eurasia.[4] By about 12 mya they had evolved into the larger size of which we are familiar. By this time they had spread to Mongolia and, later, South Africa.[5]

參考文獻[编辑]

  1. ^ ChinSciBull50:1808
  2. ^ Lisa Janz et al, Dating North Asian surface assemblages with ostrich eggshell: implications for palaeoecology and extirpation. Journal of Archaeological Science, Volume 36, Issue 9, September 2009, Pages 1982–1989; also J. G. Andersson, Essays on the cenozoic of northern China. In: Memoirs of the Geological Survey of China (Peking), Series A, No. 3 (1923), pp. 1-152, especially pp. 53-77: "On the occurrence of fossil remains of Struthionidae in China."; and J. G. Andersson, Research into the prehistory of the Chinese. Bulletin of the Museum of Far Eastern Antiquities 15 (1943), 1-300, plus 200 plates.
  3. ^ 向达校注 《西洋番国志》附录二·五《长乐山南山寺天妃之神灵应记》,53页 中华书局
  4. ^ Hou, L. et al. (2005)
  5. ^ Davies, S.J.J.F. (2003)