2005
DOI: 10.4067/s0716-078x2005000300010
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Primer registro de cráneos asignados a Palaeospheniscus (Aves, Spheniscidae) procedentes de la Formación Bahía Inglesa (Mioceno Medio-tardío), Chile

Abstract: RESUMENLos cráneos de los Spheniscidae (como los de todas las aves), aunque escasos en el registro paleontológico, muestran importantes caracteres a nivel taxonómico. Hasta el momento se conocían solo seis cráneos en todo el mundo: Paraptenodytes antarctica y una nueva especie de Spheniscidae procedentes de las Formaciones Gaiman (Mioceno Temprano) y Puerto Madryn (Mioceno Tardío) de Argentina, respectivamente; Spheniscus megaramphus y S. urbinai de la Formación Pisco (Mioceno Tardío) de Perú, Marplesornis nov… Show more

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Cited by 16 publications
(10 citation statements)
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“…The deep, extensive temporal fossae of the fossil penguins Waimanu , Paraptenodytes and Marplesornis [a similar condition is present in skulls assigned to the genus Palaeospheniscus (Acosta Hospitaleche and Canto, 2005) and an unnamed skull from the Eocene of Antarctica (Ksepka and Bertelli, in press)] indicate early penguins possessed powerful adductor musculature. Beak morphology is almost completely unknown for fossil penguins, though Waimanu tuatahi preserves a partial mandible and a few partial beaks from the Eocene of Antarctica have been reported (Olson, 1985; Myrcha et al., 1990).…”
Section: Discussionmentioning
confidence: 96%
See 1 more Smart Citation
“…The deep, extensive temporal fossae of the fossil penguins Waimanu , Paraptenodytes and Marplesornis [a similar condition is present in skulls assigned to the genus Palaeospheniscus (Acosta Hospitaleche and Canto, 2005) and an unnamed skull from the Eocene of Antarctica (Ksepka and Bertelli, in press)] indicate early penguins possessed powerful adductor musculature. Beak morphology is almost completely unknown for fossil penguins, though Waimanu tuatahi preserves a partial mandible and a few partial beaks from the Eocene of Antarctica have been reported (Olson, 1985; Myrcha et al., 1990).…”
Section: Discussionmentioning
confidence: 96%
“…In recent revisions, Acosta Hospitaleche et al. (2004) placed Palaeospheniscus and Eretiscus in the subfamily Palaeospheniscinae and Acosta Hospitaleche and Canto (2005) united Arthrodytes andrewsi and Paraptenodytes in the family Paraptenodytinae. However, neither study included a phylogenetic analysis.…”
Section: Discussionmentioning
confidence: 99%
“…The sharp, anteroposteriorly elongate sagittal crest of Perudyptes devriesi most closely resembles that of Paraptenodytes antarcticus. In Waimanu tuatahi, skulls assigned to Palaeospheniscus, and extant and extinct species of Spheniscus, the sagittal crest tends to be wider, with greater separation of the temporal fossae (Zusi, 1975;Acosta Hospitaleche and Canto, 2005;Slack et al, 2006). Intraspecific variation in the separation of the temporal fossae occurs within extant Spheniscus species , but sample sizes in fossil taxa remain too small to evaluate variation in extinct taxa.…”
Section: Institutional Abbreviationsmentioning
confidence: 99%
“…It has been mentioned as a frequent element in the Gaiman Formation (early Miocene) at Bryn Gwyn (Tonni, 1980;Acosta Hospitaleche, 2007Acosta Hospitaleche et al, 2007;Acosta Hospitaleche et al, 2008), Chubut Province, Argentina; with some doubts in the middle Miocene-Pliocene Bahía Inglesa Formation in Chile (Acosta Hospitaleche et al, 2002;Acosta Hospitaleche and Canto, 2005;Soto Acuña et al, 2008); but certainly in the middle Miocene Chilcatay Formation in Perú (Acosta Hospitaleche and Stucchi, 2005). As shown above using morphogeometric tools, the specimens from Cerro Plataforma fall within the morphological range of P. bergi, the holotype of which comes from the Gaiman Formation.…”
Section: Discussionmentioning
confidence: 99%