- Palaeeudyptinae
:"For the supposed "giant penguin" reported from
Florida around 1948, seeGiant penguin hoax ."Taxobox
name = "Palaeeudyptinae"
status = fossil
fossil_range = Middle/Late Eocene -?Middle Miocene
regnum =Animal ia
phylum = Chordata
classis = Aves
ordo =Sphenisciformes
familia =Spheniscidae
subfamilia = "Palaeeudyptinae"
subfamilia_authority = Simpson,1946
subdivision_ranks = Genera
subdivision = "Palaeeudyptes " "Archaeospheniscus " "Anthropornis " "Pachydyptes " "Platydyptes " and see article text
synonyms = "Anthropornithidae" Simpson,1946 The New Zealand Giant Penguins, "Palaeeudyptinae", are an
extinct subfamily ofpenguins . It includes several genera of medium-sized to very large species - including "Palaeeudyptes marplesi " and "Anthropornis nordenskjoeldi " which grew m to ft in|1.5 tall or even larger, and the massive "Pachydyptes ponderosus " which weighed at least as much as an adulthuman male.They belonged to an
evolution ary lineage more primitive than modern penguins. In some taxa at least, the wing, while already having lost the avianfeather ing, had not yet transformed into the semi-rigid flipper found in modern penguin species: While theulna and theradius were already flattened to increase propelling capacity, the elbow andwrist joint s still retained a higher degree of flexibility than the more rigidly lockable structure found in modern genera. The decline and eventual disappearance of this subfamily seems to be connected by increased competition asmammal groups such ascetaceans andpinnipeds became better-adapted to a marine lifestyle in theOligocene andMiocene .The members of this subfamily are known from fossils found in
New Zealand ,Antarctica , and possiblyAustralia , dating from the Middle or LateEocene to the LateOligocene ; the Australian MiddleMiocene genus "Anthropodyptes " is also often assigned to this subfamily, as are the remaining genera of primitive penguins except those fromPatagonia . Indeed, it was long assumed that all prehistoric penguins which cannot be assigned to extant genera belonged into the Palaeeudyptinae; this view is generally considered obsolete today. It is likely that some of the unassigned New Zealand/Antarctican/Australian genera like "Delphinornis ", "Marambiornis ", and "Mesetaornis " do indeed belong into this subfamily, but it is just as probable that others, such as "Duntroonornis " and "Korora", represent another, smaller and possibly somewhat more advanced lineage.The Palaeeudyptinae as originally defined (Simpson, 1946) contained only the namesake genus, the remainder being placed in the Anthropornithidae. The arrangement followed here is based on the review of Marples (1962) who synonymized the two, with updates to incorporate more current findings.
References
* Marples, B. J. (1962): Observations on the history of penguins. "In:" Leeper, G. W. (ed.), "The evolution of living organisms". Melbourne, Melbourne University Press: 408-416.
* Simpson, George Gaylord (1946): Fossil penguins. "Bull. Am. Mus. Nat. Hist." 87: 7-99. [http://digitallibrary.amnh.org/dspace/bitstream/2246/392/1/B087a01.pdf PDF fulltext]
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