Acrioceratidae

Acrioceratidae is a family of heteromorph ammonites included in the Ancyloceratoidea comprising ancyloceratid-like forms that start off with a coiled juvenile section, followed by a straight or curved shaft ending in a hook. Two described genera are included, Acrioceras and Dissimilites.

No picture of Acrioceratidae 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 Acrioceratidae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
AncyloceratoideaPBDB
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 least 12 million years on record.

The record covers at least 125.77 Mya to 113.2 Mya. No occurrence read is dated outside 132.6 Mya to 100.5 Mya.

Early Cretaceous — about 122 of 122 occurrencesEarly CretaceousLate Cretaceous — about 0 of 122 occurrences133–132 Mya — about 1.0 occurrences132–131 Mya — about 2 occurrences131–130 Mya — about 2 occurrences130–129 Mya — about 2 occurrences129–128 Mya — about 2 occurrences128–127 Mya — about 2 occurrences127–125 Mya — about 4 occurrences125–124 Mya — about 10 occurrences124–123 Mya — about 10 occurrences123–122 Mya — about 10 occurrences122–121 Mya — about 14 occurrences121–120 Mya — about 21 occurrences120–119 Mya — about 10 occurrences119–118 Mya — about 6 occurrences118–117 Mya — about 6 occurrences117–115 Mya — about 6 occurrences115–114 Mya — about 6 occurrences114–113 Mya — about 6 occurrences113–112 Mya — about 0.2 occurrences112–111 Mya — about 0.2 occurrences111–110 Mya — about 0.2 occurrences110–109 Mya — about 0.2 occurrences109–108 Mya — about 0.2 occurrences108–107 Mya — about 0.2 occurrences107–105 Mya — about 0.2 occurrences105–104 Mya — about 0.2 occurrences104–103 Mya — about 0.2 occurrences103–102 Mya — about 0.2 occurrences102–101 Mya — about 0.2 occurrences101–100 Mya — about 0.1 occurrences125.77 Mya113.2 Mya133.2 Mya99.9 Mya

122 occurrences of Acrioceratidae on record, most of them in the Early Cretaceous. 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

122 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

25 formations

Rio Mayer — 49.00°S, 72.00°WRio Mayer — 48.92°S, 72.08°WRio Mayer — 48.92°S, 71.92°WRio Mayer — 48.90°S, 72.25°WRio Mayer — 48.80°S, 72.15°WRio Mayer — 48.92°S, 71.50°WRio Mayer — 49.03°S, 72.13°WLes Graous — 43.84°N, 7.08°ETaboulouart — 31.26°N, 9.80°WTaboulouart — 30.87°N, 9.81°WTaboulouart — 30.72°N, 9.80°WTaboulouart — 30.61°N, 9.73°WBudden Canyon — 40.47°N, 122.61°WBudden Canyon — 40.41°N, 122.68°WBudden Canyon — 40.60°N, 122.90°WFerruginous Sands — 50.60°N, 1.32°WFerruginous Sands — 50.60°N, 1.35°WLa Peña — 25.43°N, 100.12°WLa Peña — 25.62°N, 100.46°WTodai — 35.79°N, 138.13°EIshido — 36.07°N, 138.83°EPaskenta — 40.13°N, 122.23°WTesin-Hradiste — 49.55°N, 18.25°EForcall — 40.55°N, 0.18°EAtherfield Clay — 51.13°N, 1.32°EDays Creek — 42.56°N, 124.07°WMount Goodenough — 67.95°N, 135.41°WUpper Shale-Siltstone Division — 67.67°N, 135.75°WPluto Glacier — 71.75°S, 68.50°WLuckowska — 49.03°N, 18.28°EMaiolica — 45.75°N, 9.48°EWhisky Bay — 64.17°S, 57.75°WWallumbilla — 16.52°S, 143.70°EDonji Milanovac — 44.53°N, 22.04°EPabellón — 27.67°S, 70.31°WTotoralillo — 27.68°S, 70.32°WSarcheshmah — 37.72°N, 56.32°E

Loading coastlines…

The named rock units Acrioceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 31 occurrences have no formation on record, which is common for older literature.

Acrioceratidae and its relatives

Early Cretaceous

Where Acrioceratidae and its relatives were recorded in the Early Cretaceous.

Found in the same rock

260 taxa

The Paleobiology Database records 107 sites for Acrioceratidae, 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

34 references

Each of the 122 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. 22 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 content0

No picture of Acrioceratidae 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 Acrioceratidae, or no answer at all. This entry cannot say which.

No 3D scan of Acrioceratidae 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.

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 itAncyloceratoidea through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Vermeulen 2004