Sinuarbullina gnaszynensis Kaim, 2004
Sugerowana cytacja: Gryz, P. 2020. Sinuarbullina gnaszynensis Kaim 2004. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Sinuarbullina+gnaszynensis)
 Holotype ZPAL Ga.9/282 from the Mid Bathonian (Mid Jurassic) of Gnaszyn (Częstochowa region) in lateral view. Diagnoza Protoconch 1 almost completely sunken into first teleoconch whorl. Protoconch medium sized. Shell elongated, 2.29 as high as broad, with high-spired, cylindrical teleoconch whorls. Adapicalsutural ramp passing gradually into whorl lateral flank. Porównanie Differs from S. cylindrica Gründel, 1997 in having much larger protoconch and a more gradual transition between the ramp and lateral flank of the whorl. From S. ansorgi differs by amore elongated shell shape. Autekologia Występowanie geograficzne Only in type locality. Zasięg czasowy Morrisiceras morrisi Zone, Mid Bathonian, Mid Jurassic.. Materiały muzealne Over 100 shells ZPAL. Literatura Kaim, A. 2004. The evolution of conch ontogeny in Mesozoic open sea gastropods. Palaeontologia Polonica 62, 3–183. |
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