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acorn worm

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acorn worm
n.
Any of a class (Enteropneusta) of hemichordate, wormlike animals that inhabit shallow burrows in mud or sand flats of intertidal zones and are equipped with an acornlike proboscis used for digging and collecting food.

acorn worm
n
(Life Sciences & Allied Applications / Animals) any of various small burrowing marine animals of the genus Balanoglossus and related genera, having an elongated wormlike body with an acorn-shaped eversible proboscis at the head end: subphylum Hemichordata (hemichordates)


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A few examples of the diverse topics covered in the volumes include acorn worm, air masses and fronts, animal cancer tests, big bang theory, biophysics, buckwheat, cardiac cycle, dentrification, dragonflies, geotropism, ice age refuges, irrational number, legumes, nuclear winter, oscillations, photocopying, quantum electrodynamics, restoration ecology, set theory, squirrel fish, tartaric acid, tumbleweed, ultraviolet astronomy, weather forecasting, xylotomy, and zodiacal light.
But Shu and others contested that interpretation, arguing in the April 4 NATURE that Yunnanozoon was a hemichordate, a separate phylum that includes the modern acorn worm.
She notes that a United States bioprospecting group collected 204 pounds of a marine acorn worm just to isolate one milligram of an anticancer compound.
 
 
 
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