Buvignieria piserai Kaim, 2004
Sugerowana cytacja: Gryz, P. 2020. Buvignieria piserai Kaim 2004. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Buvignieria+piserai)
Diagnoza Teleoconch composed of up to two whorls, ornamented with axial ribs (approx. 22–23 per whorl) and one spiral rib. Spiral rib situated on adapical part of whorl, forming weak angulation of shell. Ornament only at adapical part of body whorl. Base demarcated by spiral rib and ornamented by one more spiral rib below. Surface of teleoconch covered by fine, densely packed lirae. Protoconch 2 ornamented by oblique or spiral threads. Porównanie Differs from the other species of Buvignieria in having a lower protoconch and only two whorls of the teleoconch. Ornamentation is similar to paratype specimen SMNS 63302 of B. calloviana. Autekologia Występowanie geograficzne Only in type locality. Zasięg czasowy Quenstedtoceras lamberti Zone, Late Callovian (Mid Jurassic). Materiały muzealne Six shells. Literatura Kaim, A. 2004. The evolution of conch ontogeny in Mesozoic open sea gastropods. Palaeontologia Polonica 62, 3–183. |
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