Empirea sp. 1

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 : 172

Empirea sp. 1

Fig. 6A .

Material.— Sample Rö37: stubs Rö37_2 (one specimen), Rö37_3 (two specimens); sample Rö416: stub Rö416_6 (two specimens), Mount Rettenstein , Northern Calcareous Alps, Austria, Lower Pliensbachian .

Description.—Relatively large spherical cortical shell composed of numerous irregularly shaped pore frames. Medullary shell present but not observed in detail. Ten peripheral spines extend from the cortical shell. The three-bladed spines have about the same length as the diameter of the cortical shell.

Remarks.— Empirea sp. 1 has much longer spines and smaller and more numerous pore frames of the cortical shell than Empirea hasta Whalen and Carter in Carter et al., 1998. Empirea sp. A of Whalen and Carter in Carter et al. (1998) has a similar cortical shell as Empirea sp. 1 , but lacks the long, well-developed spines.

Figures

Fig. 6. Radiolarians from Mount Rettenstein, Austria, Pliensbachian, Early Jurassic. A. Empirea sp. 1, sample Rö416. B. Acaeniotylopsis ghostensis (Carter in Carter et al., 1988); sample Rö416. C, D. Liassobetraccium bavaricum (Kozur and Mostler, 1990); sample Rö37. E, F. Liassobetraccium verticispinosum (Kozur and Mostler, 1990); sample Rö37. G–J. Tozerium filzmoosense Cifer sp. nov. G. Holotype, sample Rö416: 170717. H. Paratype, sample Rö416: 170503. I. Paratype, sample Rö416: 170739. J. Paratype, sample Rö37: 171105. K–O. Loupanus pliensbachicus Cifer sp. nov. K. Holotype, sample Rö416: 170562. L. Paratype, sample Rö416: 170559. M. Paratype, sample Rö416: 170757. N. Paratype, sample Rö416: 170704. O. Paratype, sample Rö416: 170560. P, Q. Loupanus sp. 1; sample Rö417. R, S. Thurstonia? timberensis Whalen and Carter in Carter et al., 1998; sample Rö416. T. Thurstonia? minutaglobus Whalen and Carter in Carter et al., 1998; sample Rö416. U–W. Thurstonia? robusta Cifer sp. nov. U. Holotype, sample Rö417: Rö417_093.V. Paratype, sample Rö417: Rö417_090. W. Paratype, sample Rö417: Rö417_098.