Hydrocena

Günter Wondrak · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

Sits inside

HydrocenidaePBDB

Life habit

epifaunalPBDB, for Gastropoda

Motility

actively mobilePBDB, for Gastropoda

Vision

limitedPBDB, for Gastropoda

• Late Cretaceous17%
• Miocene83%

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Where Hydrocena and its relatives were recorded in the Miocene. Draw the map

• Acicula lineata5 sites
• Agriolimacidae5 sites
• Helicodiscus roemeri5 sites
• Argna proexcessiva3 sites
• Bulinus meneghinii3 sites
• Clausilia (Clausilia) baudoni3 sites
• Cochlostoma esuanum3 sites
• Craspedopoma conoidale3 sites
• Janulus spadinii3 sites
• Limax fossilis3 sites
• Lucilla miocaenica3 sites
• Melanoides curvicosta3 sites
• Melanopsis narzolina3 sites
• Milacidae3 sites
• Nordsieckia pontica3 sites
• Parmacella3 sites
• Pisidium3 sites
• Renea3 sites
• Saccoia globosa3 sites
• Saccoia oryza3 sites
• Theodoxus doderleini3 sites
• Theodoxus mutinensis3 sites
• Truciella ballesioi3 sites
• Acanthinula trochulus2 sites

The Paleobiology Database records 6 sites for Hydrocena, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

• Opole (Poland) - a key locality for middle Miocene terrestrial mollusc faunasHarzhauser and Neubauer, 2018 · Bulletin of Geosciences · journal article2
• Late Messinian mollusks and vertebrates from Moncucco Torinese, north-western Italy. Paleoecological and paleoclimatological implicationsColombero et al., 2017 · Palaeontologia Electronica · journal article2
• The oldest fossil Hydrocenidae found in mid-Cretaceous Burmese amber (Gastropoda: Cycloneritida)Yu and Neubauer, 2021 · Cretaceous Research · journal article1
• Late Messinian continental and Lago-Mare gastropods from the Tertiary Piedmont Basin, NW ItalyHarzhauser et al., 2015 · Bollettino della Società Paleontologica Italiana · journal article1

Each of the 6 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

What may have been alongside itHydrocenidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Küster 1844