Pisanianura pusilla Bellardi 1873

Pisanianura ? pusilla Bellardi, 1873 Fig. 6I–K Anura pusilla Bellardi, 1873: 204, pl. 11 fig. 24. Material examined ITALY – Emilia-Romagna • 4 specs; Castel di Casio; MGGC 22306 (H = 25.4, W = 15.3 mm), MGGC 22307 (H = 15.8, W = 10.8 mm), MGGC 22308 (H = 27.0, W = 23.4 mm), MGGC 22309 (H = 23.4, W =...

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Bibliographic Details
Main Authors: Kiel, Steffen, Sami, Marco, Taviani, Marco
Format: Other/Unknown Material
Language:unknown
Published: Zenodo 2023
Subjects:
Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Laubierinidae
Pisanianura
Pisanianura pusilla
sami
Online Access:https://doi.org/10.5281/zenodo.10350727
http://treatment.plazi.org/id/C80687AB9C3AFFD7FDDBFB55FC756FBD
Description
Summary:Pisanianura ? pusilla Bellardi, 1873 Fig. 6I–K Anura pusilla Bellardi, 1873: 204, pl. 11 fig. 24. Material examined ITALY – Emilia-Romagna • 4 specs; Castel di Casio; MGGC 22306 (H = 25.4, W = 15.3 mm), MGGC 22307 (H = 15.8, W = 10.8 mm), MGGC 22308 (H = 27.0, W = 23.4 mm), MGGC 22309 (H = 23.4, W = 17.7 mm). Remarks Anura pusilla was originally described by Bellardi (1873) from the Middle Miocene of the Turin hills; it was reported to reach 19 mm in height and as being rare. The specimens of P .? pusilla from Castel di Casio appear to have fewer and more widely spaced spiral threads than P. craverii (Bellardi, 1873) (see illustrations in Bellardi 1873; Ferrero Mortara et al. 1981; Landau & Harzhauser 2012). Miocene and Pliocene species of Anura Bellardi, 1873 reported by Bellardi (1873) were mentioned by Warén & Bouchet (1990) when discussing Pisanianura . They regarded the middle Miocene A. craverii as belonging to Pisanianura , but considered the position of A. pusilla as “more doubtful”. This view was adopted by Landau & Harzhauser (2012). Because our specimens neither preserve the protoconch nor allow a clear view on the aperture, we assigned A. pusilla only hesitantly to Pisanianura . Stratigraphic and geographic range Upper Oligocene (upper Chattian) to Upper Miocene, northern Italy. Family Cassidae Latreille, 1825 Published as part of Kiel, Steffen, Sami, Marco & Taviani, Marco, 2023, Mollusks (Gastropoda, Bivalvia) from Miocene cold-seep deposits in northern Italy: revisions and additions, pp. 115-160 in European Journal of Taxonomy 910 on pages 132-133, DOI:10.5852/ejt.2023.910.2365, http://zenodo.org/record/10350702

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