Pleuroceras spinatum is aspecies ofammonite from the lowerJurassic, upperPliensbachian period (189.6 ± 1.5 – 183.0 ± 1.5 Mya). Species of this genus were fast-movingnektonic carnivore.^[1]

Pleuroceras spinatum Temporal range:Lower Jurassic,189.6–183 Ma PreꞒ Ꞓ O S D C P T J K Pg N [1]
Fossil shells ofPleuroceras spinatum fromLyme Regis (England), on display atGalerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Amaltheidae
Genus:	†Pleuroceras
Species:	†P. spinatum
Binomial name
†Pleuroceras spinatum Bruguière 1789
Synonyms
Ammonites costatusSchlotheim, 1820 Ammonites franconicusSchlotheim, 1813

Shell ofPleuroceras spinatum can reach a diameter of about 45–54 millimetres (1.8–2.1 in).These ammonites have a planulate shell with a quadrate whorl section, bearing strong radial ribs ending in ventro-lateral tubercles. The venter is tabulate with a strong serrated keel.^[1]

Fossils of this species have been found in the Jurassic of France, Germany, Hungary, Italy, Serbia and Montenegro, Spain and United Kingdom.^[1]

• Ammonites