Cotteswoldia mactra

Cotteswoldia mactra (Dumortier, 1874), a relative of Cotteswoldia mactra — not Cotteswoldia mactra itself

Not Cotteswoldia mactra. This is Cotteswoldia mactra (Dumortier, 1874), a relative — both are Hildoceratidae.

unknown · CC0 · via GBIF. 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
PleydelliaPBDB
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 9.5 million years on record.

Every occurrence read is dated to somewhere between 184.2 Mya and 174.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 34 of 34 occurrencesEarly JurassicMiddle Jurassic — about 0 of 34 occurrences184–184 Mya — about 0.2 occurrences184–184 Mya — about 0.4 occurrences184–183 Mya — about 0.4 occurrences183–183 Mya — about 0.4 occurrences183–183 Mya — about 0.4 occurrences183–182 Mya — about 0.4 occurrences182–182 Mya — about 0.4 occurrences182–182 Mya — about 0.4 occurrences182–181 Mya — about 0.4 occurrences181–181 Mya — about 0.4 occurrences181–181 Mya — about 0.4 occurrences181–180 Mya — about 1 occurrence180–180 Mya — about 2 occurrences180–179 Mya — about 2 occurrences179–179 Mya — about 2 occurrences179–179 Mya — about 2 occurrences179–178 Mya — about 2 occurrences178–178 Mya — about 2 occurrences178–178 Mya — about 2 occurrences178–177 Mya — about 2 occurrences177–177 Mya — about 2 occurrences177–177 Mya — about 2 occurrences177–176 Mya — about 2 occurrences176–176 Mya — about 2 occurrences176–176 Mya — about 2 occurrences176–175 Mya — about 2 occurrences175–175 Mya — about 2 occurrences175–175 Mya — about 1 occurrence184.7 Mya174.2 Mya

34 occurrences of Cotteswoldia mactra 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

34 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.

Found in

5 formations

Jurensismergel — 49.91°N, 11.46°EJurensismergel — 47.95°N, 7.82°ESubbetic Basin — 37.59°N, 3.21°WSubbetic Basin — 38.13°N, 1.47°WOzirovo — 42.86°N, 26.42°EInici — 37.64°N, 13.00°EMarnes de Fontaneilles — 43.85°N, 3.12°E

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The named rock units Cotteswoldia mactra has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Cotteswoldia mactra and its relatives

Early Jurassic

Where Cotteswoldia mactra and its relatives were recorded in the Early Jurassic.

Found in the same rock

49 taxa

The Paleobiology Database records 27 sites for Cotteswoldia mactra, 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

11 references

Each of the 34 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.

Media and terms

Media content1

Picture of Cotteswoldia mactra (Dumortier, 1874)

Source
GBIF
Credit
unknown
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dumortier 1874)