Olcostephanidae

Olcostephanidae is an extinct ammonoid cephalopod family belonging to the superfamily Perisphinctoidea. These fast-moving nektonic carnivores lived from the Jurassic to the Cretaceous period.

Olcostephanidae

Hectonichus · CC BY-SA 3.0 · 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
OlcostephanoideaPBDB
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 23 million years on record.

The record covers at least 149.2 Mya to 125.77 Mya. No occurrence read is dated outside 161.5 Mya to 121.4 Mya.

Middle Jurassic — about 0 of 936 occurrencesLate Jurassic — about 42 of 936 occurrencesLate JurassicEarly Cretaceous — about 894 of 936 occurrencesEarly Cretaceous162–161 Mya — about 0.2 occurrences161–160 Mya — about 0.5 occurrences160–158 Mya — about 0.5 occurrences158–157 Mya — about 0.5 occurrences157–155 Mya — about 0.5 occurrences155–154 Mya — about 0.6 occurrences154–153 Mya — about 0.7 occurrences153–151 Mya — about 0.7 occurrences151–150 Mya — about 0.7 occurrences150–148 Mya — about 3 occurrences148–147 Mya — about 5 occurrences147–146 Mya — about 5 occurrences146–144 Mya — about 11 occurrences144–143 Mya — about 20 occurrences143–141 Mya — about 41 occurrences141–140 Mya — about 34 occurrences140–139 Mya — about 34 occurrences139–137 Mya — about 42 occurrences137–136 Mya — about 146 occurrences136–134 Mya — about 167 occurrences134–133 Mya — about 167 occurrences133–132 Mya — about 86 occurrences132–130 Mya — about 39 occurrences130–129 Mya — about 39 occurrences129–128 Mya — about 39 occurrences128–126 Mya — about 39 occurrences126–125 Mya — about 11 occurrences125–123 Mya — about 0.9 occurrences123–122 Mya — about 0.9 occurrences122–121 Mya — about 0.4 occurrences149.2 Mya125.77 Mya162.3 Mya120.6 Mya

936 occurrences of Olcostephanidae 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

936 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

58 formations

Miravetes — 38.09°N, 1.89°WMiravetes — 38.07°N, 1.81°WAgrio — 38.98°S, 68.00°WAgrio — 39.45°S, 67.70°WAgrio — 37.77°S, 70.40°WAgrio — 37.90°S, 69.87°WAgrio — 37.73°S, 70.22°WAgrio — 37.80°S, 70.17°WAgrio — 37.87°S, 70.03°WAgrio — 38.30°S, 70.10°WAgrio — 38.15°S, 70.10°WAgrio — 34.50°S, 69.67°WAgrio — 37.43°S, 70.45°WAgrio — 37.52°S, 70.00°WAgrio — 37.93°S, 70.12°WAgrio — 38.05°S, 70.03°WAgrio — 38.35°S, 69.92°WAgrio — 38.38°S, 70.03°WAgrio — 38.73°S, 69.90°WAgrio — 39.45°S, 70.32°WAgrio — 37.42°S, 70.33°WAgrio — 37.27°S, 70.48°WTaraises — 26.98°N, 102.08°WTaraises — 24.70°N, 103.50°WTaraises — 24.59°N, 101.51°WTaraises — 24.81°N, 101.70°WTaraises — 24.61°N, 101.57°WHajar — 14.30°N, 48.49°EHajar — 14.33°N, 48.38°EHajar — 14.55°N, 48.04°ESzentivánhegy Limestone — 47.17°N, 17.79°EEl Mergueb — 36.84°N, 9.62°EMaiolica — 43.47°N, 12.72°EMaiolica — 43.53°N, 12.58°EMogyorósdomb Limestone — 47.17°N, 17.79°EBersek Marl — 47.75°N, 18.50°EWłocławek — 51.50°N, 20.06°ESpiti Shale — 32.28°N, 78.02°ESpiti Shale — 32.32°N, 77.95°ESpiti Shale — 32.42°N, 78.08°EPunta del Cobre — 27.57°S, 70.29°WPunta del Cobre — 27.54°S, 70.30°WPunta del Cobre — 28.86°S, 71.09°WLo Valdés — 33.83°S, 70.05°WLo Valdés — 34.27°S, 69.93°WTollo — 38.07°N, 1.81°WChia Gara — 37.01°N, 43.40°ESidi Lhousseine — 31.21°N, 7.88°WRossfeld — 47.69°N, 13.66°ERossfeld — 47.79°N, 14.52°EArgiles Brunes — 32.38°N, 9.25°WBiancone — 45.58°N, 11.12°EAbundancia — 27.47°S, 70.25°WMyrtle — 43.29°N, 123.18°WPresident Beaches — 62.60°S, 61.17°WPresident Beaches — 62.66°S, 61.15°WGiumal — 32.31°N, 78.03°EGrand Essert — 45.97°N, 5.61°E

Loading coastlines…

The named rock units Olcostephanidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 34 further formations hold fewer occurrences each and are not listed. 478 occurrences have no formation on record, which is common for older literature.

Olcostephanidae and its relatives

Early Cretaceous

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

Found in the same rock

448 taxa

The Paleobiology Database records 639 sites for Olcostephanidae, and this reads 240 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

108 references

Each of the 936 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. 96 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 content1

Picture of Olcostephanidae

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Olcostephanidae 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 itOlcostephanoidea through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Haug 1910