Arkell.1956.Jurassic..

208 ITALY AND CORSICA
BATHONIAN
According to published descriptions (Floridia, 1931) the condensed
Lower Callovian at Monte Inici rests on limestones with abundant
Posidonia alpina and brachiopods, supposed to be Bathonian but yielding
no diagnostic ammonites. Mr Warman, however, found two different
Bathonian ammonite faunas, both new to Sicily. At Monte Bonifato,
from a curious pink, porcellanous limestone containing black-coated
irony nodules and encrusted black ammonites, he obtained Prohecticoceras
cf. retrocostatum (de Grossouvre), P. cf. subpunctatum (Schlippe), P. cf.
costatum (Roemer), Choffatia cf. ybbisensis (Jussen), Siemiradzkia ? sp.
indet. and many poorly-preserved Phylloceratids. This assemblage is
Upper Bathonian.
Of still greater interest are many well-preserved ammonites which he
obtained from a hard pink limestone at Monte Inici. I determined the
following, which comprise an assemblage typical of the Zigzag Zone of
NW. Europe, here associated with Mediterranean Phylloceratids.
Phylloceras kudernatschi (Hauer)
Phylloceras cf. kunihi Neumayr
Holcophylloceras mediterraneum (Neumayr)
Calliphylloceras disputabile (Zittel)
Ptychophylloceras euphyllum (Neumayr)
Lytoceras adeloides (Kudernatsch)
Lissoceras psilodiscus (Schloenbach)
Paralcidia aff. mariorae (Popovici)
Oppelia (Oxycerites) spp.
Procerites subprocerus (Buckman)
Choffatia aff. uriniacensis (Lissajous)
Parkinsonia wiirttembergica (Oppel)
Morphoceras macrescens (Buckman)
Morphoceras perinflatum Wetzel
Morphoceras aff. pingue de Grossouvre
Morphoceras sp. no v.
Other Lower Bathonian ammonites occur in other places in strata
classed with the Posidonia alpina beds, judging by some of Gemmellaro's
figures, namely Ebrayiceras problematicum (1872-82, p. xix, 1), Nannolytoceras
tripartitiforme (pi. xix, 9) and ? Zigzagiceras sp. (pi. xix, 2).
UPPER BAJOCIAN
Most of the ammonites recorded from the Posidonia alpina beds, when
not equivocal like the Phylloceratids and Oppeliids (pi. xviii), are Upper
Bajocian and mostly of the Parkinsoni Zone. Gemmellaro (1872-82)
figured Cadomites daubenyi (pi. xix, 3), Leptosphinctes hoffmanni (pi. xix, 6)
and Parkinsonia ditomplocus (pi. xix, 8) (though all under other generic
names). This dating is borne out by ammonites recorded from these
beds near Taormina, which include Parkinsonia seguenzae Di Stefano,
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