Aequispirella jurassica
Sugerowana cytacja: Gryz, P. 2020. Aequispirella jurassica Kaim 2004. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/viewrev/Species/Aequispirella+jurassica)
Diagnoza Small shell, broadly conical, sculptured by prominent prosocline axial ribs and spiral lirae. Spiral lirae in some places not continuous.Type locality only. Porównanie The proposed species differs from Recent and Tertiary species of the genus by a broader shape of the shell, prosocline axial ribs, and discontinuous spiral lirae. It may represent a subgenus of Aequispirella or even a distinct, closely related genus. Adult shells have to be found to clear up this uncertainty. Autekologia Występowanie geograficzne Only in type locality Zasięg czasowy Zasięg czasowy Quenstedtoceras lamberti Zone, Callovian. Materiały muzealne One juvenile shell ZPAL Ga.9/107. Literatura Kaim, A. 2004. The evolution of conch ontogeny in Mesozoic open sea gastropods. Palaeontologia Polonica 62, 3–183. |
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