Helcion

Jan Delsing · Public Domain · 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

PatellinaePBDB

Diet

grazerPBDB, for Patellidae

Life habit

epifaunalPBDB, for Patellidae

Motility

facultatively mobilePBDB, for Patellidae

Vision

limitedPBDB, for Gastropoda

Environment

marine,brackishPBDB, for Patellidae

• Late Jurassic10%
• Early Cretaceous40%
• Pliocene10%
• Pleistocene40%

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 Helcion and its relatives were recorded in the Early Cretaceous. Draw the map

• Natica4 sites
• Arca3 sites
• Nassarius3 sites
• Turbo3 sites
• Ammonoidea2 sites
• Aporrhais2 sites
• Avellana2 sites
• Cardita2 sites
• Cardita dupini2 sites
• Cardium2 sites
• Cymatoceras albense2 sites
• Dentalium2 sites
• Eostriatolamia gracilis2 sites
• Eurotrigonia aliformis2 sites
• Fusus2 sites
• Gastrochaena2 sites
• Glycymeris2 sites
• Macoma (Macoma) praetenuis2 sites
• Neohibolites minimus2 sites
• Nucula pectinata2 sites
• Oistotrigonia archiaciana2 sites
• Panopea2 sites
• Pleurotomaria2 sites
• Tellina2 sites

The Paleobiology Database records 7 sites for Helcion, 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.

• Jura Vaudois et NeuchateloisJaccard, 1869 · Matériaux pour la carte géologique de la Suisse · serial monograph3
• Unpublished census data for the Mollusca of the Tjornes sequence, IcelandNorton, 1975 · unpublished2
• Late Jurassic coral/microbial reefs from the northern Paris Basin - facies, paleoecology and paleobiogeographyBertling and Insalaco, 1998 · Palaeogeography, Palaeoclimatology, Palaeoecology · journal article1
• Late Tertiary and Early Quaternary Fossil Mollusca for the Hondeklip Area, Cape Province, South AfricaKensley and Pether, 1986 · Annals of the South African Museum · journal article1
• Pleistocene shorelines in the Western Cape and South-West AfricaDavies, 1973 · Annals of the Natal Museum · journal article1
• Recherches sur le Neogene et le Quaternaire marins de la cote Atlantique du MarocLecointre, 1952 · Publications du Service geologique du Maroc · serial monograph1
• Contributions to the Cretaceous paleontology of the Pacific coast. : The fauna of the KnoxvilleStanton, 1895 · Bulletin of the United States Geological Survey · journal article1

Each of the 10 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 itPatellinae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Montfort 1810