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Riftia pachyptila, commonly known as the giant tube worm and less commonly known as the giant beardworm, is a marine invertebrate in the phylum Annelida (formerly grouped in phylum Pogonophora and Vestimentifera) related to tube worms commonly found in the intertidal and pelagic zones.
tube worm, any of a number of tube-dwelling marine worms belonging to the annelid class Polychaeta (see polychaete; feather-duster worm; tentacle worm). Other tube-dwelling worms include the horseshoe worm (phylum Phoronida) and the beardworm (phylum Pogonophora).
A tubeworm is any worm-like sessile invertebrate that anchors its tail to an underwater surface and secretes around its body a mineral tube, into which it can withdraw its entire body. Tubeworms are found among the following taxa: Annelida, the phylum containing segmented worms Polychaetea, the class containing bristle worms
The annelids / ˈ æ n ə l ɪ d z / (Annelida / ə ˈ n ɛ l ɪ d ə /, from Latin anellus, "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.
13 mar 2013 · Caron and colleagues describe fossilized marine worms found in the Burgess Shale of western Canada, which dates to 505 million years ago, in the Middle Cambrian period.
Life in the Extremes: Tube Worms. These tube worms are Riftia pachyptila also known as the giant tube worms. They were the first species of tube worms ever discovered while exploring on the Galapagos hydrothermal vents in 1977.
9 kwi 2012 · Paleontologists have discovered hundreds of 3-million-year-old tube worm fossils covered with holes. Laelaps blogger Brain Switek drills into the cause of these peculiar marks.
