797d4bffecb6150110ab565f07290b4a

...

Hexitheca Sysoev, 1972

Source

Rank

genus

Names

1

Biostratigraphy of hyolite-orthothecimorphs of the Lower Cambrian, Siberian platform. Inst. Geol. , Akad. Nauk SSSR, 'Nauka', Moscow: 62.