conv.

All stories
ScienceQuiet 3d · day 8

Half-billion-year-old fossils reshape starfish origins and feeding habits

518-million-year-old fossils reveal starfish ancestors ate with tentacles, not passive gill filtering.

newest coverage 3d agosummary written 3d ago5 pieces44 likes & upvotes NewswiresGoogle NewsMastodonBluesky

What to know

  • 518-million-year-old fossils reveal starfish ancestors actively fed using tentacles, not passively filtering through gills.
  • The discovery reshapes scientific understanding of how the entire ambulacrarian clade (starfish, sea urchins, acorn worms) originated and evolved.
  • Findings challenge decades of prior assumptions about early echinoderm and ambulacrarian biology.

“The fossils show that these animals ate using tentacles rather than passively using their gills, as previously thought.”

Phys.org reporting · Phys.org ↗ · Sep 15

Scientists (unattributed) Fossil researchers

How it unfolded 2 developments, newest first · click a bar or a number to jump articlesposts

Peak 2 pieces in two hours at Sep 16, 10 AM; 5 pieces over 8 days (3 articles · 2 posts) Sep 16, 10 AM — 2 pieces · 2 articles — Google News 1, Newswires 1Sep 16, 12 PM — quietSep 16, 2 PM — quietSep 16, 4 PM — quietSep 16, 6 PM — quietSep 16, 8 PM — quietSep 16, 10 PM — quietSep 17, 12 AM — quietSep 17, 2 AM — quietSep 17, 4 AM — quietSep 17, 6 AM — 1 piece · 1 article — Google News 1Sep 17, 8 AM — quietSep 17, 10 AM — quietSep 17, 12 PM — quietSep 17, 2 PM — quietSep 17, 4 PM — quietSep 17, 6 PM — quietSep 17, 8 PM — quietSep 17, 10 PM — quietSep 18, 12 AM — quietSep 18, 2 AM — quietSep 18, 4 AM — quietSep 18, 6 AM — quietSep 18, 8 AM — quietSep 18, 10 AM — quietSep 18, 12 PM — quietSep 18, 2 PM — quietSep 18, 4 PM — quietSep 18, 6 PM — quietSep 18, 8 PM — quietSep 18, 10 PM — quietSep 19, 12 AM — quietSep 19, 2 AM — quietSep 19, 4 AM — quietSep 19, 6 AM — quietSep 19, 8 AM — quietSep 19, 10 AM — quietSep 19, 12 PM — quietSep 19, 2 PM — quietSep 19, 4 PM — quietSep 19, 6 PM — quietSep 19, 8 PM — quietSep 19, 10 PM — quietSep 20, 12 AM — quietSep 20, 2 AM — quietSep 20, 4 AM — quietSep 20, 6 AM — quietSep 20, 8 AM — quietSep 20, 10 AM — quietSep 20, 12 PM — quietSep 20, 2 PM — quietSep 20, 4 PM — 2 pieces · 2 posts — Bluesky 1, Mastodon 1Sep 20, 6 PM — quietSep 20, 8 PM — quietSep 20, 10 PM — quietSep 21, 12 AM — quietSep 21, 2 AM — quietSep 21, 4 AM — quietSep 21, 6 AM — quietSep 21, 8 AM — quietSep 21, 10 AM — quietSep 21, 12 PM — quietSep 21, 2 PM — quietSep 21, 4 PM — quietSep 21, 6 PM — quietSep 21, 8 PM — quietSep 21, 10 PM — quietSep 22, 12 AM — quietSep 22, 2 AM — quietSep 22, 4 AM — quietSep 22, 6 AM — quietSep 22, 8 AM — quietSep 22, 10 AM — quietSep 22, 12 PM — quietSep 22, 2 PM — quietSep 22, 4 PM — quietSep 22, 6 PM — quietSep 22, 8 PM — quietSep 22, 10 PM — quietYesterday, 12 AM — quietYesterday, 2 AM — quietYesterday, 4 AM — quietYesterday, 6 AM — quietYesterday, 8 AM — quietYesterday, 10 AM — quietYesterday, 12 PM — quietYesterday, 2 PM — quietYesterday, 4 PM — quietYesterday, 6 PM — quietYesterday, 8 PM — quietYesterday, 10 PM — quiet 12
Sep 17Sep 18Sep 19Sep 20Sep 21Sep 22now · 12:59 AM ET
  1. 2

    Discovery circulates across social platforms

    The fossil discovery gains attention on social media platforms including Bluesky and Mastodon, with posts highlighting how it changes understanding of ambulacrarian (starfish, sea stars, sea urchins, acorn worms) feeding habits and origins.

    “A new fossil discovery changes our understanding about the feeding habits of the last common ancestor of ambulacrarians – the clade of invertebrate animals that today includes starfish, sea stars, sea urchins and acorn worms.”
    — jhaue@aus.social, Social media user · source
    • jhaue.bsky.social

      Half-billion-year-old fossils rewrite the origins of sea stars

      jhaue.bsky.socialBluesky3d ago44▲view on Bluesky ↗
    1 more of the top 2 · 2 posts in this stretch
    • jhaue@aus.social

      Half-billion-year-old fossils rewrite the origins of sea stars A new fossil discovery changes our understanding about the feeding habits of the last common ancestor of ambulacrarians – the clade of invertebrate animals that today includes starfish, sea stars, sea urchins and acorn worms. https:// connectsci.au/news/news-parent…

      jhaue@aus.socialMastodon3d agoview on Mastodon ↗
    all of them →
  2. 3 days quiet
  3. 1

    Scientists announce fossil discovery reshaping starfish origins

    Researchers report discovery of several 518-million-year-old fossils that reshape understanding of the origins of the animal group containing starfish. The fossils reveal these animals ate using tentacles rather than passively using their gills as previously thought.

    1. 1 outlet Half-billion-year-old fossils rewrite the origin story of starfish

      first by Phys.org, 7d ago

      1 more headline

What people are saying 0 voices from 0 sites · best of 2 · verbatim