Arkell.1956.Jurassic..

242 THE IBERIAN PENINSULA
In Portugal these forms are associated with rare Pleuroceras but overlie
the main Pleuroceras beds, and thus enable the Italian fauna to be
accurately dated. The rest of the section is as follows (Mouterde, 1953):—
Bed 15c. Canavaria nerina (Fucini), C. cf. elisa (Fuc), C. spp. nov.,
Hildaites cf. kisslingi (Hug), H. rapisardii (Fuc), H. sp. nov., ? Paltarpites
aff. ballinensis (Haas), Pleuroceras aff. buckmani (Moxon).
Bed 156. No ammonites.
Bed 15a. Arieticeras lottii (Gem.), A. spp.
Bed 14. Marly limestones with Pleuroceras cf. elaboratum (Simpson),
P. birdi (Simpson)?, P. spp.
At Thomar, Choffat (1908) found in 30-35 m. of beds successive zones
of Uptonia jamesoni, Androgynoceras capricornus, Protogrammoceras
normanianum and Amaltheus margaritatus. A more detailed succession
was obtained by Dubar along the coast south of San Pedro de Muel
(Mouterde, 1947, 1951):—
12. Marls and limestones with pyritic fossils: Harpoceras bonarellii
Fucini, Coeloceras aff. colubriniforme Bettoni, Spiriferina villosa (Quenst.).
11. Marls with Lytoceras sp., Arieticeras cf. domarense (Meneg.) and
allied forms.
10. Marls with some limestone bands containing Amaltheus margaritatus
Montf. and large Lytoceras fimbriatum (Sow.). Near the base Androgynoceras
sp., Tragophylloceras ibex (Quenst.), and higher up T. loscombi
(Sow.), Harpoceras cf. fieldingi (Reynes), Protogrammoceras cf. normanianum
(d'Orb.).
9. Marls (1-2 m.). Harpoceratids of the group of H. portisi Fucini
and antiquum Geyer non Wright; Arieticeras aff. colloti Lanquine.
8. Marls with beds of limestone (2-3 m.). Androgynoceras henleyi}
(Sow.), Oistoceras spp., Metacyntbites centriglobus (Oppel).
7. Marls with Eoderoceras impavidum (Buckman), Lytoceras fimbriatum
(Sow), Acanthopleuroceras aff. valdani (d'Orb.), Tropidoceras sp., Metacymbites
sp.; a little higher, Beaniceras centaurus (d'Orb.) var. elegans
Spath, B. ? luridum (Simpson).
6. Marls with a band of marly limestone: Tragophylloceras cf. paucicostatum
(Pomp.) and a large smooth ammonite.
5. Marls with thin beds of limestone: Dayiceras polymorphoides Spath
and nov. var.
4. Jamesoni Zone. Marls and limestones (20 m.).
40". Uptonia reynardi (d'Orb.), U. angusta (Quenst.), U. dayiceroides
Mouterde.
\c. Uptonia ignota (Simpson), Tragophylloceras paucicostatum
(Simpson).
46. Uptonia jamesoni (Sow.), Polymorphites muellensis Mouterde.
4