Cristalloella (Cristalloella) Bandel, 1995

Gründel, Joachim & Nützel, Alexander, 2013, Evolution and classification of Mesozoic mathildoid gastropods, Acta Palaeontologica Polonica 58 (4), pp. 803-826 : 815-816

Subgenus Cristalloella (Cristalloella) Bandel, 1995 Fig. 9C .

Type species: Cristalloella cassiana Bandel, 1995 , original designation; Late Triassic ; North Italy .

Included species: Cristalloella cassiana Bandel, 1995 , Late Triassic; Wonwalica spiralocostata Gründel, 1998 , Callovian; Cristalloella parva Bandel, Gründel, and Maxwell, 2000 , late Early Jurassic–early Middle Jurassic; Cristalloella (Cristalloella) carinata Gründel,2006 , Bathonian.

Emended diagnosis.—Shell often very slender and with numerous whorls. Axial and spiral ribs cover the whorls. The

http://dx.doi.org/10.4202/app.2012.0052

keel is strong. Shell with flat and angular base. A strong bor− der rib is developed.

Stratigraphic and geographic range.—Late Triassic to Callovian; Germany, France, New Zealand, 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).