Hammatoceras

Searched as Hammatoceras meneghinii raricostatum n. ssp.. The Paleobiology Database treats Hammatoceras as the accepted name.

Hammatoceras is a genus of ammonites belonging to the family Hammatoceratidae which lived during the Toarcian stage of the Early/Lower Jurassic between about 184 and 175 million year ago.

Hammatoceras

Hectonichus · CC BY-SA 4.0 · 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.

On record

Recorded, not inferred
Sits inside
HammatoceratidaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 5.7 million years on record.

The one occurrence read is dated to somewhere between 180.4 Mya and 174.7 Mya, which is a dating window rather than a span.

Early Jurassic — about 1 of 1 occurrenceEarly JurassicMiddle Jurassic — about 0 of 1 occurrence180–180 Mya — about 0.0 occurrences180–180 Mya — about 0.0 occurrences180–180 Mya — about 0.0 occurrences180–180 Mya — about 0.0 occurrences180–179 Mya — about 0.0 occurrences179–179 Mya — about 0.0 occurrences179–179 Mya — about 0.0 occurrences179–179 Mya — about 0.0 occurrences179–178 Mya — about 0.0 occurrences178–178 Mya — about 0.0 occurrences178–178 Mya — about 0.0 occurrences178–178 Mya — about 0.0 occurrences178–178 Mya — about 0.0 occurrences178–177 Mya — about 0.0 occurrences177–177 Mya — about 0.0 occurrences177–177 Mya — about 0.0 occurrences177–177 Mya — about 0.0 occurrences177–176 Mya — about 0.0 occurrences176–176 Mya — about 0.0 occurrences176–176 Mya — about 0.0 occurrences176–176 Mya — about 0.0 occurrences176–176 Mya — about 0.0 occurrences176–175 Mya — about 0.0 occurrences175–175 Mya — about 0.0 occurrences175–175 Mya — about 0.0 occurrences175–175 Mya — about 0.0 occurrences180.9 Mya174.2 Mya

1 occurrence of Hammatoceras on record, most of them in the Early Jurassic. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

1 occurrences

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.

Hammatoceras and its relatives

Early Jurassic

Where Hammatoceras and its relatives were recorded in the Early Jurassic.

Found in the same rock

300 taxa

The Paleobiology Database records 76 sites for Hammatoceras, 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.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Hammatoceras

Credit
Hectonichus
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itHammatoceratidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.