Arkell.1956.Jurassic..

VILLANY HILLS 191
which are proverbially difficult to identify with certainty from figures of
incomplete material). In the following list of predominantly or wholly
Bathonian forms the references are to Loczy's plates.
Lytoceras adeloides (Kud.) (p. 308)
Phylloceras kudernatschi Hauer (i, 1-2)
Phylloceras hatzegi Loczy (i, 3)
Ptychophylloceras flabellatum (Neum.) (i, 4, ii, 1)
Calliphylloceras disputabile (Zit.) (i, 2; ii, 3-5; iii, 1)
Prohecticoceras haugi (Pop.-Hatzeg) (v, 1-2)
Prohecticoceras subpunctatum (Schlippe) (iv, 6-7)
Prohecticoceras angulicostatum (Loczy) (v, 4; vi, 1)
Oecotraustes aff. nodifer Buckman (iii, 8, 9, 19, 20)
Paralcidia mariorae (Pop.-Hatzeg) (iii, 14, 15; iv, 5)
[? Clydoniceras cf. tegularum Arkell (iv, 3)]
Cadomites cf. extinctus (Quenst.) (iv, 10)
Tulites (Rugiferites) sp. indet. (iv, 9)
? Tulites (Rugiferites) sp. indet. (iv, 8)
? Wagnericeras banaticum (Kud.) (x, 8)
Procerites aff. subprocerus (Buck.) (p. 425)
Unique and problematic ammonites are Villania densilobata Till (misinterpreted
as a Perisphinctes by Loczy) and 'Aspidoceras' rollieri Loczy,
both of which by their sutures and mode of coiling appear to be new
genera of Lytoceratina.
The ammonite bed is disconformably overlain, with a sharp boundary,
by thick, hard Upper Oxfordian limestone, which is the rock principally
worked in the quarries. Lower Oxfordian is missing, and nothing higher
than Upper Oxfordian is exposed or known to occur in the Jurassic
sequence.
DINARIC RANGES AND DALMATIA
Like the Wallachian plain, the Adriatic depression is pinched between
folded and overthrust ranges which have driven towards it from opposite
sides: across the Adriatic Sea the Apennines, in which movement has
been to the NE., face the Dinaric ranges, in which movement has been
to the SW.
On the Dalmatian side, Istria and the islands and coast ranges are part
of the foreland, corrugated by simple folds and faults. Deformation
increases in intensity inland and soon folds give place to thrusts (Bourcart,
1922, 1928). At the same time the Mesozoic rocks change in facies.
Triassic limestones and dolomites, followed by Jurassic limestones which
may represent continuous sedimentation, give place in the inner thrust
regions to Triassic geosynclinal deposits with masses of cherts, siliceous
shales or hornstones, radiolarites, greenstone intrusives and extrusives
('ophiolites'), and highly incomplete Jurassic. A number of tectonic zones
have been worked out and their connexions with the southern Alps and
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