Relating to or belonging to flatworms of the genus Dendrocoela with branched digestive cavities.
Adjectival form derived from dendrocoela, using the -an suffix to indicate belonging or relating to this group of organisms.
The branched digestive cavity of dendrocoelan flatworms is so efficient that it's essentially a solved biological problem—the design hasn't changed much in hundreds of millions of years because it works perfectly for organisms of that size!
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