Canoptum reefense ( Pessagno and Whalen, 1982 )

Cifer, Tim, Goričan, Špela, Gawlick, Hans-Jürgen & Auer, Matthias, 2020, Pliensbachian, Early Jurassic radiolarians from Mount Rettenstein in the Northern Calcareous Alps, Austria, Acta Palaeontologica Polonica 65 (1), pp. 167-207 : 192

Canoptum reefense ( Pessagno and Whalen, 1982)

Fig. 10U, V.

1982 Relanus reefensis sp. nov.; Pessagno and Whalen 1982: 125, pl. 1: 2–4; pl. 12: 3.

1990 Relanus hettangicus sp. nov.; Kozur and Mostler 1990: 220, pl. 16: 1, 4, 5, 7, 10, 11, 14; pl. 17: 8, 14–16.

1990 Relanus multiperforatus sp. nov; Kozur and Mostler 1990: 221, pl. 16: 2, 3.

1998 Relanus reefensis Pessagno and Poisson, 1981 ; Carter et al. 1998: 65, pl. 16: 4, 5, 10, 11; pl. 26: 6.

2001 Canoptum reefense ( Pessagno and Whalen, 1982) ; Gawlick et al. 2001: 43, fig. 2: 24.

2002 Relanus reefensis Pessagno and Whalen, 1982 ; Tekin 2000: 189, pl. 4: 9.

Material.—Sample Rö37: stub Rö37_1 (one specimen); sample Rö38: stub Rö38_1 (two specimens); sample Rö416: stub Rö416_5 (one specimen), Mount Rettenstein , Northern Calcareous Alps, Austria, Lower Pliensbachian .

Remarks.—In Canoptum reefense we group spindle-shaped distally constricted morphotypes with hoop-like segments. Postabdominal segments are covered with irregularly distributed small pores but lack a more distinct ornamentation.

Stratigraphic and geographic range.—Hettangian to lower Sinemurian ( Carter et al. 1998), Lower Pliensbachian (this study). Haida Gwaii (British Columbia, Canada), Northern Calcareous Alps ( Austria, Germany), Turkey.