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.

Specyfikacja

Królestwo
ANIMALIA 

Typ
MOLLUSCA

Podtyp
CONCHIFERA

Gromada
GASTROPODA

Podgromada
PROSOBRANCHIA

Rząd
Trochida

Rodzina
Skeneidae

Rodzaj
Aequispirella

Gatunek
Aequispirella jurassica

Synonimy

Populacja typowa gatunku

Holotyp

ZPAL Ga.9/107

Locus typicus

Łuków (block in glacial drift), Poland.

Stratum typicum

Quenstedtoceras lamberti Zone, Callovian


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Created by Administrator on 2020/06/20 15:19

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