Specimen OS-75/459a from Gałęzice syncline (level G3; depth 143,3-144,5 m) in dorsal view; originally described as Goniatites granosus granosus Portlock (see Żakowa, 1971)

Diagnoza

Shell globose, rounded in early stages, becoming subglobose to thick discoidal and subrectangular in cross section at maturity, involute; flanks and venter with 65 to 80 longitudinal lirae crossed by fine transverse lirae and three of fourth growth constrictions per whorl; on adult conch fine granules ornament the longitudinal lirae; suture like that of G. choctawensis.

Porównanie

May be a descendant of G. tumidus, which shows already a tendency to develop very low coils at early stages of the ontogeny.

Autekologia

Występowanie geograficzne

Ireland, Great Britain, Scotland, Belgium, Germany (Rhenish Slate Mts., Harz Mts.), Czechia (Sudetes), Poland (Gałęzice, boreholes of Lamki 1, Ostrzeszów, Łopuszno 1), Austria (Carinthia), Spain (Asturia, Pirenees), northern Africa (C Morocco, W Algeria), Russia (NE Ural, Nova Zemlya, Moscow Basin); USA (Arkansas, Oklahoma, Texas, W Utah, Alaska)

Zasięg czasowy

Carboniferous; Serpukhovian

Materiały muzealne

12 specimens from Gałęzice

Literatura

Brüning, K. 1923a. Beiträge zur Kenntnis des rheinisch-westfälischen Unterkarbons. Geologisches Archiv 1: 263-266.

Korejwo, K. & Teller, L. 1967. Stratygrafia dolnego karbonu (górny wizen) z wierceń Sulów 1 i Lamki 1. Acta Geologica Polonica 17(2): 299-314.

Żakowa, H. 1971. Poziom Goniatites granosus w synklinie galęzickiej (Góry Swiętokrzyskie). Prace lnstytutu Geologicznego 60: 1-137.