2005
DOI: 10.1016/j.geobios.2004.02.003
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Crossvallia unienwillia, a new Spheniscidae (Sphenisciformes, Aves) from the Late Paleocene of Antarctica

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Cited by 54 publications
(59 citation statements)
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“…Penguins first appear in the fossil record in the early Paleocene (,60.5-61.6 Ma) of New Zealand and expand their range to nearly the entirety of their presentday geographical distribution by the late Eocene. Fossils indicate that stem penguins reached Antarctica by the late Paleocene (Tambussi et al, 2005), South America by the middle Eocene (Clarke et al, , 2007, and Australia by the late Eocene (Simpson, 1957;Jenkins, 1974). Peruvian fossils reveal that these Paleogene dispersals included multiple incursions into low latitude waters by the late Eocene (Clarke et al, 2007).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Penguins first appear in the fossil record in the early Paleocene (,60.5-61.6 Ma) of New Zealand and expand their range to nearly the entirety of their presentday geographical distribution by the late Eocene. Fossils indicate that stem penguins reached Antarctica by the late Paleocene (Tambussi et al, 2005), South America by the middle Eocene (Clarke et al, , 2007, and Australia by the late Eocene (Simpson, 1957;Jenkins, 1974). Peruvian fossils reveal that these Paleogene dispersals included multiple incursions into low latitude waters by the late Eocene (Clarke et al, 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Penguin specimens known from this early Paleocene-late Eocene interval were limited to fragmentary remains. Such material includes the holotype of Crossvalia unienwillia, comprising three incomplete bones from the late Paleocene of Seymour Island, Antarctica (Tambussi et al, 2005), a single partial femur from the ?middle Eocene of New Zealand (Marples, 1952;see Simpson [1972] regarding stratigraphic uncertainty), a partial hindlimb and pelvis from the middle Eocene of South America , and ,70 almost exclusively isolated postcranial elements and a single beak fragment from the early-middle Eocene deposits of Seymour Island, Antarctica (Jadwiszczak, 2006a(Jadwiszczak, , 2006b). The limited nature of this material has obscured understanding of the morphological changes that took place in the early evolution of penguins.…”
Section: Introductionmentioning
confidence: 99%
“…Montes et al (2007) las describen como margas y citan ostras, dientes de peces, tiburones, equinoideos, gastrópodos y pingüinos (Tambussi et al, 2005). Hacia el techo del alomiembro hay areniscas finas con estratificación paralela de color blanquecino con intercalaciones de lutitas oscuras, ocasionalmente hojosas y abundante presencia de improntas de hojas (Fig.…”
Section: Alomiembro Cross Valley Cunclassified
“…Penguins (Aves: Sphenisciformes) have the fairly extensive Paleogene fossil re− cord (Jadwiszczak 2009) and their earliest unambiguous remains, assignable to three species, were reported from the Paleocene of New Zealand and the Antarctic Penin− sula (Tambussi et al 2005;Slack et al 2006). Eocene penguins were very diversi− fied and widely distributed over the Southern Hemisphere (Clarke et al 2003(Clarke et al , 2007(Clarke et al , 2010Jadwiszczak 2006;Tambussi et al 2006;Sallabery et al 2010;Fordyce and Thomas 2011), whereas those from the Oligocene are known from New Zealand (numerous fossils ;Jadwiszczak 2009;Ksepka et al 2012), Australia (Park and Fitz− gerald 2012) and Patagonia (Acosta Hospitaleche and Tambussi 2008).…”
Section: Introductionmentioning
confidence: 99%