AMPHIPYNDACOIDEA Riedel, 1967

Suzuki, Noritoshi, Caulet, Jean-Pierre & Dumitrica, Paulian, 2021, A new integrated morpho- and molecular systematic classification of Cenozoic radiolarians (Class Polycystinea) - suprageneric taxonomy and logical nomenclatorial acts, Geodiversitas 43 (15), pp. 405-573 : 469

Superfamily AMPHIPYNDACOIDEA Riedel, 1967

Amphipyndacidae Riedel, 1967a: 148 ; 1967b: 296; 1971: 657.

Amphipyndacaceae [sic] O’Dogherty, 1994: 98 (= Amphipyndacoidea )[as a superfamily].

Amphipyndacea [sic] – De Wever et al. 2001: 266 (= Amphipyndacoidea )[as a superfamily].

Amphipyndacioidea [sic] – Afanasieva et al. 2005: S302 (= Amphipyndacoidea ). — Afanasieva & Amon 2006: 151.

DIAGNOSIS. — Amphipyndacoidea are multisegmented Nassellaria whose cephalis is divided into two parts, a spherical cavity and flattened space, by a thick, horizontal divider. This divider is formed by horizontally or subhorizontally extended branches of A-rod. A-, D-, V-, Lr- and Ll-rods are observed.

REMARKS

This superfamily consists of the Mesozoic Amphipyndacidae , Canoptidae Pessagno in Pessagno et al. (1979), Parvicingulidae Pessagno 1977c , Syringocapsidae Foreman 1973b , and Spongocapsulidae Pessagno 1977c ( De Wever et al. 2001). Amphipyndacidae is the only known member appearing in the Cenozoic. Suzuki H. et al. (2002: 180) noted the similarity between the cephalic initial spicular system of the earliest Jurassic Canoptum and that of Amphipyndacidae . They subsequently concluded that Canoptidae is a junior synonym of the Amphipyndacidae .However, the photographic evidence of Suzuki H. et al. (2002: fig. 8K) was insufficient in evaluating the illustrated structure of the Canoptidae that was drawn and published in De Wever et al. (2001: fig. 177). The difference between De Wever et al. (2001) and Suzuki , Hisashi’s opinion ( Suzuki H. et al. 2002) is the rank of superfamily/family.