Tetraspidoceras quadrarmatum

Tetraspidoceras quadrarmatum

via iDigBio · CC BY · via iDigBio. 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
TetraspidocerasPBDB
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 8.7 million years on record.

Every occurrence read is dated to somewhere between 192.9 Mya and 184.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 2 of 2 occurrencesEarly Jurassic193–193 Mya — about 0.0 occurrences193–192 Mya — about 0.1 occurrences192–192 Mya — about 0.1 occurrences192–192 Mya — about 0.1 occurrences192–191 Mya — about 0.1 occurrences191–191 Mya — about 0.1 occurrences191–191 Mya — about 0.1 occurrences191–190 Mya — about 0.1 occurrences190–190 Mya — about 0.1 occurrences190–190 Mya — about 0.1 occurrences190–190 Mya — about 0.1 occurrences190–189 Mya — about 0.1 occurrences189–189 Mya — about 0.1 occurrences189–189 Mya — about 0.1 occurrences189–188 Mya — about 0.1 occurrences188–188 Mya — about 0.1 occurrences188–188 Mya — about 0.1 occurrences188–187 Mya — about 0.1 occurrences187–187 Mya — about 0.1 occurrences187–187 Mya — about 0.1 occurrences187–186 Mya — about 0.1 occurrences186–186 Mya — about 0.1 occurrences186–186 Mya — about 0.1 occurrences186–185 Mya — about 0.1 occurrences185–185 Mya — about 0.1 occurrences185–185 Mya — about 0.1 occurrences185–184 Mya — about 0.1 occurrences184–184 Mya — about 0.0 occurrences193.4 Mya183.7 Mya

2 occurrences of Tetraspidoceras quadrarmatum 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

2 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.

Tetraspidoceras quadrarmatum and its relatives

Early Jurassic

Where Tetraspidoceras quadrarmatum and its relatives were recorded in the Early Jurassic.

Found in the same rock

16 taxa

The Paleobiology Database records 2 sites for Tetraspidoceras quadrarmatum, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Tetraspidoceras quadrarmatum

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Tetraspidoceras quadrarmatum was found in Sketchfab.

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

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dumortier 1867)