Newmarracarroceras

Newmarracarroceras is an ammonite from the early middle Jurassic with a ribbed subinvolute shell with a keel running along the venter, or outer rim. The umbilicus is moderately wide, exposing the inner whorls exposed in part.

No picture of Newmarracarroceras was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Newmarracarroceras, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
WitchelliinaePBDB
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 2.3 million years on record.

Every occurrence read is dated to somewhere between 170.9 Mya and 168.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Jurassic — about 31 of 31 occurrencesMiddle Jurassic171–171 Mya — about 0.7 occurrences171–171 Mya — about 1 occurrence171–171 Mya — about 1 occurrence171–171 Mya — about 1 occurrence171–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–170 Mya — about 1 occurrence170–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 1 occurrence169–169 Mya — about 0.7 occurrences171.4 Mya168.1 Mya

31 occurrences of Newmarracarroceras on record, most of them in the Middle 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

31 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

1 formation

Newmarracarra Limestone — 28.66°S, 114.66°ENewmarracarra Limestone — 28.76°S, 114.85°ENewmarracarra Limestone — 29.02°S, 114.92°ENewmarracarra Limestone — 28.79°S, 114.81°ENewmarracarra Limestone — 28.88°S, 114.96°E

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The named rock units Newmarracarroceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Newmarracarroceras and its relatives

Middle Jurassic

Where Newmarracarroceras and its relatives were recorded in the Middle Jurassic.

Found in the same rock

39 taxa

The Paleobiology Database records 29 sites for Newmarracarroceras, 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

4 references

Each of the 31 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 content0

No picture of Newmarracarroceras was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Newmarracarroceras, or no answer at all. This entry cannot say which.

No 3D scan of Newmarracarroceras was found in MorphoSource and Sketchfab.

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 itWitchelliinae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1989