Amphiope caronei n. sp. (Echinoidea Astriclypeidae) from the Tortonian of Cessaniti, Vibo Valentia Province (Calabria, Italy)
Stara, P.; Marini, F. (2018). Amphiope caronei n. sp. (Echinoidea Astriclypeidae) from the Tortonian of Cessaniti, Vibo Valentia Province (Calabria, Italy). Biodiversity Journal 9(1): 73-88
In: Biodiversity Journal. Edizioni Danaus: Palermo. ISSN 2039-0394, more
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| Keywords |
Geological time > Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Miocene
Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Miocene > Tortonian
Amphiope L. Agassiz, 1840 [WoRMS]; Astriclypeidae Stefanini, 1912 [WoRMS]
Italy, Calabria [Marine Regions]
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| Abstract |
A new species of Amphiope L. Agassiz, 1840 (Echinoidea Astriclypeidae) from the late Miocene (Tortonian) of Vibo Valentia Province, Calabria, Southern Italy, is herein described. This species is distinguished from all the others so far known, by the smaller size of the petalodium, that varies from a minimum of 40.5% to a maximum of 46% (mean 44%) of the test length, thus representing the lowest value in this genus. It is hypothesized that the petalodium reduction could be due to climate and - more generally - environment, resulting from the Mediterranean pre-salinity crisis conditions that characterized these areas during the Tortonian and towards the beginning of the Messinian. |
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