Concavocycloides frasniensis Boczarowski, 2001


Sugerowana cytacja: Gryz, P. 2020. Concavocycloides frasniensis Boczarowski 2001. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Concavocycloides+frasniensis)

Diagnoza

Marginals with large, rectangular wings. Apertures always with two clearly marked facet canals on the ventral side which open into a weakly to strongly marked crown lacking a central depression. Apertures at the centre of the crown are either irregular or in a meandering arrangement.


Porównanie

This species is the most advanced  in its lineage with the largest wings. The diversified sculpture of its dorsal surface is characteristic and unique.


Autekologia


Występowanie geograficzne

Only known from the type locality. 

Zasięg czasowy

Middle Frasnian, early Palmatolepis hassi to early Palmatolepis rhenana Zones.

Materiały muzealne

Holotype: GIUS 4−610 Szg./548/2 and 8 specimens

Literatura

Boczarowski, A. 2001. Isolated sclerites of Devonian non-pelmatozoan echinoderms. Palaeontologia Polonica 59: 3-220.


Specyfikacja

Królestwo
ANIMALIA 

Typ
ECHINODERMATA

Podtyp
PELMATOZOA

Gromada
EDRIOASTEROIDEA

Rząd
Cyclocystoidida

Rodzina
Apycnodiscidae

Rodzaj
Concavocycloides

Gatunek
Concavocycloides frasniensis

Synonimy

Populacja typowa gatunku

Holotyp

GIUS 4−610 Szg./548/2 

Locus typicus

Layer W6 of Szczukowskie Górki, Holy Cross Mountains. 

Stratum typicum

Middle Frasnian, early Palmatolepis hassi to early Palmatolepis rhenana Zones.


Tags:
Utworzone 2020/06/15 15:13 przez Piotr Gryz

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