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RT @KlausRiede: "The Chaetognatha (arrow worms) are a group of marine carnivores whose phylogenetic relationships are still vigorously deba…
RT @KlausRiede: "The Chaetognatha (arrow worms) are a group of marine carnivores whose phylogenetic relationships are still vigorously deba…
"The Chaetognatha (arrow worms) are a group of marine carnivores whose phylogenetic relationships are still vigorously debated. Molecular studies have as yet failed to come up with a stable hypothesis on their phylogenetic position" https://t.co/XmgzRVoMjO