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Not direct descendants of Puijila
- Today’s seals and sea lions are not direct descendants of Puijila, but the otter-like mammal represents what pinniped ancestors were like at one point in the distant past. Paleontologists know this because rock layers of about the same age—about 24 million years old—as Puijila contain the remains of the early pinniped Enaliarctos.
www.smithsonianmag.com/science-nature/why-did-seals-and-sea-lions-never-commit-to-a-life-fully-at-sea-180983926/Why Did Seals and Sea Lions Never Commit to a Life Fully at ...
Apr 22, 2009 · Puijila is a massive boon for biologists trying to understand the evolution of pinnipeds, the group that includes seals, sea lions and walruses. It's not itself a direct ancestor, having branched off the evolutionary path that led to modern pinnipeds.
Apr 22, 2009 · Scientists have found the first skeleton of a land-dwelling relative of seals, sea lions, and walruses. The 20-million- to 24-million-year-old Arctic fossil sports webbed feet instead of flippers, providing a long-sought glimpse of what such animals looked like before they dove into the sea.
This suggests that Puijila swam quadrupedally using its webbed fore and hind feet for propulsion. Phylogenetic studies including molecular evidence suggest a sister relationship between seals, bears and musteloids (weasels and otters).
Apr 22, 2009 · (PhysOrg.com) -- Researchers from the United States and Canada have found a fossil skeleton of a newly discovered carnivorous animal, Puijila darwini. New research suggests Puijila is a "missing...
- Science X
Apr 23, 2009 · Puijila is a morphological intermediate in the land-to-sea transition of pinnipeds and provides new evidence concerning the evolution and biogeography of the earliest pinnipeds.
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Are seals and sea lions descendants of Puijila?
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Is Puijila a skeleton of a pinniped?
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What was the first skeleton of a sea lion?
Apr 22, 2009 · The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds. It's from a different branch. But it does show...
