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Opisthocomiformes

Opisthocomids
Amrediad amseryddol:
Eosen hwyr - Presennol
Late Eocene–0
Hoatsin (Opisthocomus hoazin)
Dosbarthiad gwyddonol
Teyrnas: Animalia
Ffylwm: Chordata
Dosbarth: Aves
Urdd: Opisthocomiformes
Teiprywogaeth
Phasianus hoazin
Statius Muller, 1776
Genws
Dosbarthiad yr unig rywogaeth o fewn yr urdd
Cyfystyron

?Foratidae
Hoazinoididae
?Onychopterygidae

Urdd o adar yw'r Opisthocomiformes sydd ag un cynrychiolydd, sef yr Hoatsin (Opisthocomus hoazin) sydd i'w gael ym Masn Amazonas yn Ne America.

Darganfyddwyd sawl ffosil gan gynnwys un o Affrica[1] ac un yn Ewrop.[2]

  1. Mayr, G., Alvarenga, H. and Mourer-Chauviré, C. (2011). "Out of Africa: Fossils shed light on the origin of the hoatzin, an iconic Neotropic bird." Naturwissenschaften, doi:10.1007/s00114-011-0849-1 PMID 21964974
  2. Gerald Mayr and Vanesa L. De Pietri (2014). "Earliest and first Northern Hemispheric hoatzin fossils substantiate Old World origin of a "Neotropic endemic"". Naturwissenschaften in press. doi:10.1007/s00114-014-1144-8.

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Timpumodunol (Opisthocomiformes) AVK Hoacinové Czech Opisthocomiformes English Opisthocomiformes FRR Hoätzineftigen FY Hoacinalakúak Hungarian Hoatzins Dutch Opisthocomiformes NB

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