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1 December 2004 RAMPHASTOSULA (AVES, SULIDAE): A NEW GENUS FROM THE EARLY PLIOCENE OF THE PISCO FORMATION, PERU
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Abstract
Cranial material from a new genus (Ramphastosula) of Sulidae is described. The material comes from the Early–Lower Pliocene of the Pisco Formation of the central-southern coast of Peru. The skulls are characterized by (1) remarkable convex curvature of the dorsal surface and straight ventral surface of the rostrum, only with a curvature on the third anterior part and the tip of the bill; (2) well developed occipital and temporal regions; (3) broad opisthotic process projecting to the level of postorbital processes; (4) broad temporal fossa, and (5) flat braincase and robust frontal region.
MARCELO STUCCHI and MARIO URBINA "RAMPHASTOSULA (AVES, SULIDAE): A NEW GENUS FROM THE EARLY PLIOCENE OF THE PISCO FORMATION, PERU," Journal of Vertebrate Paleontology 24(4), (1 December 2004). https://doi.org/10.1671/0272-4634(2004)024[0974:RASANG]2.0.CO;2
Received: 6 August 2003; Accepted: ; Published: 1 December 2004
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