The seahorses from Fiume Marecchia were determined by L. Sorbini as Hippocampus ramulosus Leach, 1814, a recent species. H. ramulosus is according to the World Register of Marine Species (WoRMS) a synonym of H. guttulatus Cuvier, 1829.
References:
SORBINI, Lorenzo (1987) BIOGEOGRAPHY AND CLIMATOLOGY OF PLIOCENE AND MESSINIAN FOSSIL FISH OF EASTERN-CENTRAL ITALY. Boll. Mus. Civ. St. Nat. Verona", 14, pp. 1-85
Class: Percomorphaceae
Family: Syngnathidae
Argille Azzurre Formation
Marne, argille e tripoli di Corpolò (TCO) Member
Emilia-Romagna
International Age: Zanclean - Piacenzian
Date Collected: No value
Catalog #: TFF-oilshale-Ch1359