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| | A NEW BIRD (FAMILY CRACIDAE) FROM THE EARLY OLIGOCENE OF SOUTH DAKOTA (Site not responding. Last check: 2007-10-08) |
 | | This projection, the postarticular process, is not so uniform in the Galliformes as might be supposed. |
 | | Although it is well developed in the Phasianoidea, it is reduced to a small, sharp point in the Opisthocomidae, and varies in the Cracidae from small and straight in Pipile to well-developed in Penelope and Crax. |
 | | Furthermore, the process can readily be broken off, as shown by its frequent accidental absence in modern eracid skeletons in museum collections. |
| elibrary.unm.edu /sora/Auk/v074n02/p0174-p0184.html (4461 words) |
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