Phylogenetic position of Helicolocellus. Helicolocellus is resolved as a stem-group hexactinellid along with other fossil sponges (IMAGE)

Chinese Academy of Sciences Headquarters

Phylogenetic position of Helicolocellus. Helicolocellus is resolved as a stem-group hexactinellid along with other fossil sponges

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Phylogenetic position of Helicolocellus. Helicolocellus is resolved as a stem-group hexactinellid along with other fossil sponges

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YUAN Xunlai

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