Dumortieria

Dumortieria is a genus of ammonites belonging to the family Graphoceratidae.

Dumortieria

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
GrammoceratinaePBDB
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 14 million years on record.

Every occurrence read is dated to somewhere between 184.2 Mya and 170.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 274 of 279 occurrencesEarly JurassicMiddle Jurassic — about 5 of 279 occurrencesMiddle Jurassic184–184 Mya — about 4 occurrences184–183 Mya — about 4 occurrences183–183 Mya — about 5 occurrences183–182 Mya — about 8 occurrences182–182 Mya — about 8 occurrences182–181 Mya — about 8 occurrences181–181 Mya — about 8 occurrences181–180 Mya — about 8 occurrences180–180 Mya — about 18 occurrences180–179 Mya — about 18 occurrences179–179 Mya — about 18 occurrences179–179 Mya — about 18 occurrences179–178 Mya — about 18 occurrences178–178 Mya — about 18 occurrences178–177 Mya — about 18 occurrences177–177 Mya — about 18 occurrences177–176 Mya — about 18 occurrences176–176 Mya — about 18 occurrences176–175 Mya — about 18 occurrences175–175 Mya — about 18 occurrences175–174 Mya — about 0.7 occurrences174–174 Mya — about 0.7 occurrences174–173 Mya — about 0.7 occurrences173–173 Mya — about 0.7 occurrences173–172 Mya — about 0.7 occurrences172–172 Mya — about 0.7 occurrences172–171 Mya — about 0.7 occurrences171–171 Mya — about 0.6 occurrences184.7 Mya170.4 Mya

279 occurrences of Dumortieria 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

279 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

13 formations

Jurensismergel — 49.91°N, 11.46°EJurensismergel — 48.83°N, 10.10°EJurensismergel — 47.95°N, 7.82°ESubbetic Basin — 37.59°N, 3.21°WSubbetic Basin — 38.13°N, 1.47°WKisgerecse — 47.70°N, 18.47°EMarnes de Fontaneilles — 43.85°N, 3.12°EBraunjura alpha & Braunjura beta — 48.90°N, 7.67°EOzirovo — 43.11°N, 23.30°EOzirovo — 41.52°N, 24.67°EOzirovo — 43.03°N, 23.25°ETölgyhát — 47.70°N, 18.47°EHarrison Lake — 49.33°N, 121.82°WPhantom Creek — 53.38°N, 132.26°WInici — 37.64°N, 13.00°ESpatsizi — 57.49°N, 128.87°WKef el Orma — 36.35°N, 10.07°ELautaro — 28.57°S, 70.10°W

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The named rock units Dumortieria has been recovered from, largest first. Drawn where the rock is now, not where it formed. 66 occurrences have no formation on record, which is common for older literature.

Dumortieria and its relatives

Early Jurassic

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

Found in the same rock

177 taxa

The Paleobiology Database records 117 sites for Dumortieria, 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

22 references

Each of the 279 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. 10 further references are not listed. 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 content2

Picture of Dumortieria

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

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itGrammoceratinae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.