| 词条 | Palaeospheniscus gracilis |
| 释义 |
| fossil_range = Early Miocene (Colhuehuapian-Friasian) ~{{fossil range|20.43|15.97}} | genus = Palaeospheniscus | species = gracilis | authority = Ameghino 1899 | synonyms =
}} Palaeospheniscus gracilis is a species of the extinct penguin genus Palaeospheniscus. It is the smallest species of its genus, with a height of {{convert|40|to|60|cm|in}}. Average individuals, thus, were about the size of the Galapagos penguin. DescriptionThis species was long believed to have first been found in Early Oligocene deposits. However, it seems that the type specimen, a tarsometatarsus, was recovered not from Early Oligocene rocks, but was found on top of them, having been displaced there from a later stratum. The location where the bone was found seems to have been near Cabeza Blanca. At any rate, all later specimens were found in the Early Miocene Gaiman Formation; those that have locality data are from the area around Trelew and Gaiman in Chubut Province, Argentina.[1] Some recent researchers{{Citation needed|date=February 2007}} have suggested that this species should be considered a synonym of Palaeospheniscus bergi. References{{Portal|Argentina|Birds|Neogene|Paleontology}}1. ^Palaeospheniscus gracilis at Fossilworks.org Further reading
10 : Palaeospheniscus|Extinct penguins|Miocene birds of South America|Friasian|Santacrucian|Colhuehuapian|Neogene Argentina|Fossils of Argentina|Fossil taxa described in 1899|Taxa named by Florentino Ameghino |
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