Palaeeudyptinae

Palaeeudyptinae

:"For the supposed "giant penguin" reported from Florida around 1948, see Giant penguin hoax."Taxobox
name = "Palaeeudyptinae"
status = fossil
fossil_range = Middle/Late Eocene -? Middle Miocene
regnum = Animalia
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 of penguins. 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 adult human male.

They belonged to an evolutionary lineage more primitive than modern penguins. In some taxa at least, the wing, while already having lost the avian feathering, had not yet transformed into the semi-rigid flipper found in modern penguin species: While the ulna and the radius were already flattened to increase propelling capacity, the elbow and wrist joints 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 as mammal groups such as cetaceans and pinnipeds became better-adapted to a marine lifestyle in the Oligocene and Miocene.

The members of this subfamily are known from fossils found in New Zealand, Antarctica, and possibly Australia, dating from the Middle or Late Eocene to the Late Oligocene; the Australian Middle Miocene genus "Anthropodyptes" is also often assigned to this subfamily, as are the remaining genera of primitive penguins except those from Patagonia. 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]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Penguin — Taxobox name = Penguins fossil range = Paleocene Recent image width = 250px image caption = Gentoo Penguin, Pygoscelis papua regnum = Animalia phylum = Chordata classis = Aves infraclassis = Neognathae ordo = Sphenisciformes ordo authority =… …   Wikipedia

  • Palaeeudyptes — Taxobox name = Palaeeudyptes status = fossil fossil range = Middle/Late Eocene Late Oligocene regnum = Animalia phylum = Chordata classis = Aves ordo = Sphenisciformes familia = Spheniscidae subfamilia = Palaeeudyptinae genus = Palaeeudyptes… …   Wikipedia

  • Pachydyptes — Temporal range: Late Eocene Pachydyptes ponderosus Scientific classification Kingdom …   Wikipedia

  • Anthropodyptes — Taxobox name = Anthropodyptes status = fossil fossil range = Middle Miocene regnum = Animalia phylum = Chordata classis = Aves ordo = Sphenisciformes familia = Spheniscidae subfamilia = Palaeeudyptinae? genus = Anthropodyptes genus authority =… …   Wikipedia

  • Archaeospheniscus — Taxobox name = Archaeospheniscus fossil range = Middle/Late Eocene Late Oligocene regnum = Animalia phylum = Chordata classis = Aves ordo = Sphenisciformes familia = Spheniscidae subfamilia = Palaeeudyptinae genus = Archaeospheniscus genus… …   Wikipedia

  • Giant penguin hoax — The giant penguin is a cryptid, allegedly seen in Florida during the 1940s. The legend has no scientific merit and is at least partly documented to have been a hoax.In 1948, several people reported finding large, three toed animal tracks at… …   Wikipedia

  • Icadyptes salasi — Taxobox name = Icadyptes salasi image caption = Icadyptes salasi image width = 250px fossil range = late Eocene regnum = Animalia phylum = Chordata classis = Aves ordo = Sphenisciformes familia = Spheniscidae subfamilia = Palaeëudyptinae genus =… …   Wikipedia

  • Arbre phylogénétique (Aves) — Aves (classification phylogénétique) Cette page a pour objet de présenter un arbre phylogénétique des Aves (ou Oiseaux), c est à dire un cladogramme mettant en lumière les relations évolutives complexes (relations groupes ancestraux groupes… …   Wikipédia en Français

  • Aves (Classification Phylogénétique) — Cette page a pour objet de présenter un arbre phylogénétique des Aves (ou Oiseaux), c est à dire un cladogramme mettant en lumière les relations évolutives complexes (relations groupes ancestraux groupes descendants) existant entre les différents …   Wikipédia en Français

  • Aves (classification phylogenetique) — Aves (classification phylogénétique) Cette page a pour objet de présenter un arbre phylogénétique des Aves (ou Oiseaux), c est à dire un cladogramme mettant en lumière les relations évolutives complexes (relations groupes ancestraux groupes… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”