TY  - JOUR
AU  - Galácz, András
TI  - Rare and new Late Bathonian (Middle Jurassic) ammonites from Monte Kumeta, western Sicily
JF  - NEUES JAHRBUCH FÜR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
J2  - NEUES JAHRB GEOL P-A
VL  - 291
PY  - 2019
IS  - 3
SP  - 231
EP  - 252
PG  - 22
SN  - 0077-7749
DO  - 10.1127/njgpa/2019/0798
UR  - https://m2.mtmt.hu/api/publication/30615660
ID  - 30615660
AB  - The Middle Jurassic sequence of the West Sicilian Monte Kumeta contains a faunal level with a very rich Late Bathonian ammonite assemblage. The typical Tethyan fauna with many representatives of phylloceratids and lytoceratids also yielded oppeliids, perisphinctids and other diagnostic forms (incl. the index Prohecticoceras blanazense Elmi, 1967) to date the assemblage as the lower, Blanazense Subzone of the Prohecticoceras retrocostatum Zone. The probably lower position of the assemblage within the Retrocostatum Zone precedes the general appearance of the Bathonian heteromorph genus Parapatoceras, thus two new genera (Kumetaceras n. gen, with type species K. enigmaticum n. sp. and Sikeliceras n. gen. with type species S. costatum n. sp.) are of special interest from the point of view of the origin and/or dimorphism of Bathonian-Callovian heteromorphs. Other new forms are also described: the strigoceratid Phlycticeras tenue n. sp., the oppeliid Paroecotraustes minor n. sp. and the perisphinctid Sicilisphinctes n. gen. (with type species S. incertus n. sp.) and Albanesiceras n. gen. (with type species A. damianoi n. sp.). Some other, rare ammonites are described in detail, further forms are figured and discussed shortly.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Galácz, András
TI  - Bajocian (middle jurassic) ammonites of stratigraphical and palaeobiogeographical importance from Mombasa, Kenya, East Africa
JF  - GEODIVERSITAS
J2  - GEODIVERSITAS
VL  - 39
PY  - 2017
IS  - 4
SP  - 717
EP  - 727
PG  - 11
SN  - 1280-9659
DO  - 10.5252/g2017n4a4
UR  - https://m2.mtmt.hu/api/publication/3357440
ID  - 3357440
N1  - Cited By :4            
            Export Date: 28 August 2023            
            Correspondence Address: Galácz, A.; Department of Palaeontology, Pázmány Péter sétány 1/C, Hungary; email: galacz@ludens.elte.hu
AB  - Collections of Middle Jurassic ammonites made at the Mwachi River locality, near Mombasa in the late 1980‘s and early 1990‘s are described. They support previous research concluding a Late Bajocian age for the major or the upper part of the ‘Posidonia shales’, immediately below and above the dividing Massive (Coral) Limestone. The ammonite species are figured and briefly described. Two Upper Bajocian ammonite zones are evidenced: A lower assemblage indicates the Strenoceras niortense Zone and a higher one belonging to the Garantiana garantiana Zone. Most of the ammonites are Tethyan forms with abundant phylloceratids and lytoceratids, some indicating connections with coeval Arabian and Sinai faunas. Palaeobiogeographically the assemblages suggest a deep-water position on the East-African Gondwana margin, with strong faunistic influence from the open Tethys and very restricted connections with the Arabian shallow water regions. © Publications scientifiques du Muséum national d’Histoire naturelle, Paris.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Galácz, András
AU  - Kassai, Piroska
TI  - New species and stratigraphic data on Lower Bajocian (Middle Jurassic) lytoceratids (Ammonoidea) from Lókút, Hungary
JF  - PALAEONTOLOGISCHE ZEITSCHRIFT
J2  - PALAEONTOL Z
VL  - 86
PY  - 2012
IS  - 3
SP  - 281
EP  - 295
PG  - 15
SN  - 0031-0220
DO  - 10.1007/s12542-011-0128-7
UR  - https://m2.mtmt.hu/api/publication/2135919
ID  - 2135919
LA  - English
DB  - MTMT
ER  -