Cristalloella (Wonwalica) Schröder, 1995

Gründel, Joachim & Nützel, Alexander, 2013, Evolution and classification of Mesozoic mathildoid gastropods, Acta Palaeontologica Polonica 58 (4), pp. 803-826 : 816

Subgenus Cristalloella (Wonwalica) Schröder, 1995 Fig. 9D .

Type species: Wonwalica minuta Schröder, 1995 , original designation; Valanginian , Poland .

Included species: Cristalloella sinuata Bandel, 1995 , Late Triassic; Cristalloella delicata Bandel, 1995 , Late Triassic; Wonwalica minuta Schröder, 1995 , Valanginian; Wonwalica n. sp. sensu Gründel 1999b, early Bathonian; Cristalloella boczarowskii Kaim, 2004 , Valanginian; Cristalloella (Wonwalica) pusilla Gründel, 2006 , late Bathonian; Cristalloella (Wonwalica) sp. nov. sensu Gründel 2007b, Pliensbachian; Cristalloella (Wonwalica) bandeli Gründel, 2007a , late Toarcian–early Aalenian.

Diagnosis.—Shell mostly relatively broad and with only few whorls (in relation to the typical subgenus). The keel is as strong as in C. ( Cristalloella ). The base is always convex and lacks a bordering rib against the whorl face.

Stratigraphic and geographic range.—Late Triassic to Early Cretaceous; Germany, France, North Italy.

Figures

Fig. 9. Type species and examples for Triassic and Jurassic genera of the family Tofanellidae. A, B. Tofanella laevigata (von Münster, 1841), Cassian Formation, Alpe di Specie, Dolomites, N Italy, Late Triassic A. From Bandel (1995: pl. 10: 1). B. From Bandel (1995: pl. 10: 2). C. Cristalloella (Cristalloella) cassiana Bandel, 1995, Cassian Formation, Campo, Dolomites, N Italy, Late Triassic; from Bandel (1995: pl. 10: 9). D. Cristalloella (Wonwalica) minuta Schröder, 1995, Wąwał, Poland, Valanginian; from Schröder (1995: pl. 10: 1). E. Neodonaldina elongata (Zardini, 1978), Cassian Formation, Alpe di Specie, Dolomites, N Italy, Late Triassic. Protoconch (E1) from Bandel (1996: fig. 5d), whole specimen (E2) from Bandel (1996: fig. 6a). F. Graphis rotundata (Gründel, 1998), borehole Heringsdorf 4/63, Germany, middle Callovian; from Gründel (1998: pl. 1: 5). G. Graphis albida (Kanmacher, 1798), Pliocene, Nice/France; from Bandel (2005: fig. 64). H. Camponaxis lateplicata (Klipstein, 1843), Cassian Formation, Misurina, Dolomites, N Italy, Late Triassic; from Bandel (1995: pl. 14: 3). I. Usedomella laevigatoidea (Gründel, 1993), borehole Kłęby 1/37 (formerly Klemmen), Poland, Callovian; from Gründel (1998: pl. 2: 19). J. Urlocella minuera Gründel, 1998, bore Kłęby 1/37, late Bathonian; from Gründel (1998: pl. 1: 11).