A Revision of the Pliocene Naticids of Northern and Central Italy. I. The Subfamily Naticinae Except Tectonatica

Pedriali, Luca; Robba, Elio

doi:10.13130/2039-4942/6279

Cited by 2 publications

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“…From the Pliocene, the patterns present in naticids, including those seen in the Romualdo Formation, are organized in the most different ways, somehow sharing similarities (spots, axial and longitudinal stripes and blotches). Examples including the fossil species Cochlis propinqua Pecchioli, 1864 from the Pliocene of Italy (Pedriali & Robba 2005)…”

Section: Discussion On the Colour Patterns Of The Naticidaementioning

confidence: 99%

“…However, because of the rapid decay of their pigments, they are rare in the fossil record and require excellent fossilization (Kobluk & Mapes 1989). The oldest examples of colouration in gastropods date back to the Ordovician (Kobluk & Mapes, 1989;Schneider, Mandic & Harzhauser 2013;Gubanov & Bogolepova 2014), but, as expected, are more common in the Mesozoic and Cenozoic (Bandel & Kiel 2003;Pedriali & Robba 2005;Schneider & Werner 2007;Caze et al 2011aCaze et al , 2011bCaze, Merle & Schneider 2015).…”

Section: Introductionmentioning

confidence: 90%

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Gastropods Colour Patterns in Cassiopids and Naticids from Romualdo Formation, Araripe Basin, Northeast Brazil

Pereira

Prado

Araripe

et al. 2022

Anu. Inst. Geociênc.

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The phylum Mollusca includes one of the most beautiful examples of colour patterns in present-day shells. However, they are rare in the fossil record because they demand excellent fossilization. In Brazil, colour patterns in fossil mollusk shells are recorded in gastropods Natica aff. bulbulus White, 1887 from the Riachuelo Formation (Aptian-Albian), Sergipe-Alagoas Basin. This paper presents the first gastropod shells from the Romualdo Formation with colour patterns, visible under natural and UV light, belonging to the families Naticidae and Cassiopidae, collected at Santo Antônio outcrop municipality of Exu, Pernambuco and, Pinheiro and Serra do Mãozinha sites, municipality of Missão Velha and Romualdo site, municipality of Crato, Ceará. Among the cassiopids more than 100 specimens were tested, with 1/3 of them showing a residual colour pattern under UV light exposure, after chemical preparation. They correspond to the species Paraglauconia (Diglauconia) araripensis (Beurlen, 1964), Paraglauconia (Diglauconia) lyrica Maury, 1934, Gymnentome (Gymnentome) carregozica (Maury, 1934) and Gymnentome (Gymnentome) romualdoi Beurlen, 1964. The colour pattern is virtually similar in both genera, with fluorescent stripes on a dark background, showing the taxonomic similarity between them. As for the naticids, about 20 specimens were collected and 15 show good preservation, observing the visible colour pattern under natural light in Natica sp. and Euspira sp.; both new taxa for the Araripe Basin. The residual colour pattern in naticids ranges from spiral stripes to sigmoidal lines and blotches of brown and yellowish tones on a paler background, as observed in fossil species of the same family in the Cenozoic. The new occurrences increase the fossiliferous diversity of mollusks of the Romualdo Formation and extend the understanding of the diversity of colouration patterns of Lower Cretaceous gastropods.

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Section: Discussion On the Colour Patterns Of The Naticidaementioning

confidence: 99%