Lower Bathonian ammonites


The ammonitic fauna of the lower Bathonian deposits is divided into ten families. Some are only poorly represented, others, on the contrary, rich in number and species. Some forms of tethysian origin are also announced.

Fauna

Lytoceratidae

Pairs

Pseudoperisphinctidae

Parkinsoniidae

Clydoniceratidae

Morphoceratidae

Phlycticeratidae

Sphaeroceratidae

Oppeliidae

Lissoceratidae

Phylloceratidae

Zone fossils

M. (Morphoceras) macrescens (Buck.)
A. (Asphinctites) recinctus (Buck.)
A. (Asphinctites) tenuiplicatus (Brau.)

Aurigerus Zone

Some characteristic species of the Tenuiplicatus Subzone

Asphinctites (Asphinctites) tenuiplicatus (Brauns)
Asphinctites (Polysphinctites) secundus (Wetz.)
Paroecotraustes formosus (Ark.)
Procerites (Procerites) sp
Procerites (Siemiradzkia) sp
Wagnericeras sp
Micromphalites sp.

Some characteristic species of the Recinctus Subzone

Asphinctites (Asphinctites) recinctus (Buck.)
Oxycerites nivernensis (de Gross.)
Oxycerites bradleyi (Ark.)
Oxycerites seebachi (Opp.)
Procerites laeviplex (Quenst.)
Zigzagiceras (Procerozigzag) postpollubrum (Buck.)

Zigzag Zone

Accompanying fauna , covering several Subzones or coming from lower levels

Oxycerites limosus (Buck.)
Oxycerites yeoviliensis (Roll.)
Oecotraustes decipiens (de Gross.)
Procerites (Siemiradzkia) aurigerus (Opp.)
Oecotraustes bomfordi (Ark.)
Procerites gr. schloenbachi (de Gross.)
Lissoceras psilodiscus (Schloenb.)
Lissoceras ferrifex (Stur.)
Phlycticeras dorsocavatum (Quenst.)
Sphaeroptychius sp
Eohecticoceras primaevum
Nannolytoceras tripartitum (Rasp.)
Lobosphinctes (Lobosphinctes) tmetolobus (Buck.)
Lobosphinctes (Planisphinctes) planilobus (Buck.)
Lobosphinctes (Planisphinctes) acurvatus (Wetz.)
Morphoceras pingue ( de Gross.)
Cadomites rectelobatus (v. Hau.)
Parkinsonia gr. pachypleura (Buckm.)

Some characteristic species of the Macrescens Subzone

Morphoceras (Ebrayiceras) sulcatum (Ziet.) 
Morphoceras (Morphoceras) macrescens (Buck.) 
Morphoceras (Morphoceras) multiforme (Buck.) 
Parkinsonia (Gonolkites) gyrumbilica (Quenst.)
Parkinsonia (Gonolkites) wurttembergica (Opp.)
Cadomites (Cadomites) exstinctus(Quenst.)
Cadomites (Polyplectites) linguiferus (d' Orb.)
Zigzagiceras (Zigzagiceras) euryodos (Schmidt)
Zigzagiceras (Zigzagiceras) plenum (Ark.)
Zigzagiceras (Zigzagiceras) torrensi (Stur.)
Zigzagiceras (Procerozigzag) cf. pseudoprocerus (Buck.)
Zigzagiceras (Procerozigzag) crassizigzag (Buck.)
Procerites (Siemiradzkia) procerus (v. Seeb.)
Oecotraustes (Paroecotraustes) cf angustoides (Elmi)