GEOLOGIJA 36, 69-74 (1993), Ljubljana 1994
UDK 56.02:551,761(497.12)=863
Epigondolella abneptis and E. spatulata in the Lower Norian in
the central Kamnik Alps, Slovenia
Anton Ramovš
Katedra za geologijo in paleontologijo, Univerza v Ljubljani, Aškerčeva 2, 61000 Ljubljana,
Slovenija
Abstract
Epigondolella abneptis (Huckriede, 1958) and E. spatulata (Hayashi, 1968)
from the Lower Norian (Upper Triassic) deeper marine micritic limestones with
chert nodules and lenses in the locality Sleme, central Kamnik Alps, are pre-
sented.
Introduction
In the locality Sleme south of the Skuta Mountain well bedded dark gray micritic
limestones with chert nodules and lenses contain very rich holothurian skeletons and
individual conodonts with Epigondolella abneptis (Huckriede, 1958) and ramiform
elements. Conodont samples contain also fish teeth, Nurella sp. and remains of
floating crinoids (R a m o v Š & Jamnik, 1991; Jamnik & Ramovš, 1993).
Conodonts
Genus Epigondolella Mosher, 1968
Type species: Polygnathus abneptis (Huckriede, 1958)
Epigondolella abneptis (Huckriede, 1958)
PL 1, figs, la-d, 3a-c
1958 Polygnathus abneptis n. sp. - Huckriede, 156-157, pi. 11, 12, 14.
1980 Metapolygnathus abneptis abneptis (Huckriede, 1958 - Kovács
& Kozur, 562-565, pi. 3, figs. 2, 3, pi. 4, figs. 1, 3 (cum syn.).
1989 b Epigondolella abneptis (Huckriede) - K o z ur, pl. 18, fig. 5 (from Kovács
& Kozur, 1980, pL 3, fig. 3).
Material: 6 specimens.
Age: E. abneptis A.-Z., Lower Norian, Upper Triassic.
70
Anton Ramovš
Fig. 1. Locality Sleme in the central Kamnik Alps with the
Lower Norian deeper marine beds with conodonts and holothurian
skeletons (after Jamnik & Ramovš, 1993)
Type species: Epigondolella spatulata (Hayashi, 1968)
Epigondolella spatulata (Hayashi, 1968)
PI. 1, figs. 2a-c, 4a-c
1968 Gladigondolella abneptis var. spatulata var. nov. - Hayashi, 69, pl. 2, fig.
5.
1980 Metapolygnathus abneptis spatulatus (Hayashi, 1968) - Kovács & Kozur,
565-569, pi. 3, figs. 4, 5, pi. 4, fig. 2 (cum syn.).
1989a Epigondolella spatulata (Hayashi) - Kozur, 402.
1991 Epigondolella spatulata (Hayashi) - Koike, Kodachi, Matsuno
& Baba, pl. 2, figs. 36-39.
Material: 10 specimens.
Age: E. abneptis A.-Z., Low^er Norian, Upper Triassic.
Emended diagnosis: A subspecies of Metapolygnathus abneptis with nodes
and sometimes ridges on the posterior part of the platform, which is commonly
broadened in a spatula-like manner in adult specimens (Kovács & Kozur, 1980,
568).
Remarks: The juvenile forms from Sleme show a small denticle in the middle
part of the platform and which is characteristic for juvenile stage of E. spatulata (cf.
Kovács & Kozur, 1980, 565). In adult stage the specimens from Sleme are
characterized with ridges on the posterior part of the platform.
Epigondolella abneptis and E. spatulata in the Lower Norian...
71
Fig. 2. Lower Norian limestone with chert on Sleme and sites
of conodont samples 6/1-4 (after Jamnik & Ramovš, 1993)
Photo A. Jamnik
A - limestone, B - chert
Acknowledgment
This work was carried out partly at the Institut of Geology and Paleontology
(Fachbereich Geowissenschaften), University Marburg/Lahn. The author was kindly
recieved at the Institute. Photographs were taken with Cam Scan by K. Fecher, and
the prints prepared by J. Kirsch, Institut of Geology and Paleontology, University
Marburg/Lahn. The work was supported by the Alexander von Humboldt-Stiftung.
Warmest thanks are extended to all.
72	Anton Ramovš
Plate 1
Lower Norian conodonts Epigondolella abneptis (Huckriede, 1958) and E. spatulata (Hay-
ashi, 1968) on Sleme in the central Kamnik Alps
1	Epigondolella abneptis (Huckriede, 1958). Sleme, 6/3; la upper view, lb, le lateral views,
X 100; 1 d lower view, x 140; adult form
2	Epigondolella spatulata (Hayashi, 1968). Sleme, 6/2; 2a upper view, 2b lateral view, x 70, 2 c
lower view, x 90; adult form
3	Epigondolella abneptis (Huckriede, 1958). Sleme, 6/3; 3 a lateral view, x 135,3 b upper view, 3 c
lower view, x 180; juvenile stage
4	Epigondolella spatulata (Hayashi, 1968). Sleme, 6/1; 4a lateral view, 4b upper view, 4c lower
view, x 160; juvenile stage
Epigondolella abneptis and E. spatulata in the Lower Norian...
73
74	Anton Ramovš
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