Crenotrapezium

Searched as Crenotrapezium kurumense kurumense. The Paleobiology Database treats Crenotrapezium as the accepted name.

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

On record

Recorded, not inferred
Sits inside
NeomiodontidaePBDB
Diet
suspension feederPBDB, for Venerida
Life habit
infaunalPBDB, for Venerida
Motility
facultatively mobilePBDB, for Venerida
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 8.7 million years on record.

The record covers at least 192.9 Mya to 184.2 Mya. No occurrence read is dated outside 199.5 Mya to 174.7 Mya.

Early Jurassic — about 13 of 13 occurrencesEarly JurassicMiddle Jurassic — about 0 of 13 occurrences200–199 Mya — about 0.2 occurrences199–198 Mya — about 0.5 occurrences198–197 Mya — about 0.5 occurrences197–197 Mya — about 0.5 occurrences197–196 Mya — about 0.5 occurrences196–195 Mya — about 0.5 occurrences195–194 Mya — about 0.5 occurrences194–193 Mya — about 0.5 occurrences193–192 Mya — about 0.5 occurrences192–191 Mya — about 0.5 occurrences191–191 Mya — about 0.5 occurrences191–190 Mya — about 0.5 occurrences190–189 Mya — about 0.5 occurrences189–188 Mya — about 0.5 occurrences188–187 Mya — about 0.5 occurrences187–186 Mya — about 0.5 occurrences186–185 Mya — about 0.5 occurrences185–185 Mya — about 0.5 occurrences185–184 Mya — about 0.4 occurrences184–183 Mya — about 0.4 occurrences183–182 Mya — about 0.4 occurrences182–181 Mya — about 0.4 occurrences181–180 Mya — about 0.4 occurrences180–179 Mya — about 0.4 occurrences179–179 Mya — about 0.4 occurrences179–178 Mya — about 0.4 occurrences178–177 Mya — about 0.4 occurrences177–176 Mya — about 0.4 occurrences176–175 Mya — about 0.4 occurrences175–174 Mya — about 0.2 occurrences192.9 Mya184.2 Mya200 Mya174.2 Mya

13 occurrences of Crenotrapezium 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

13 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

4 formations

Kitamatadani — 36.67°N, 138.00°EKitamatadani — 36.75°N, 137.33°EKitamatadani — 37.02°N, 137.80°EKitamatadani — 36.50°N, 138.00°EShinatani — 36.67°N, 138.00°EShinatani — 36.75°N, 137.33°EShinatani — 37.02°N, 137.80°EShinatani — 36.50°N, 138.00°ENegoya — 36.67°N, 138.00°ENegoya — 36.75°N, 137.33°ENegoya — 36.50°N, 138.00°ETsuchizawa — 37.02°N, 137.80°ETsuchizawa — 36.50°N, 138.00°E

Loading coastlines…

The named rock units Crenotrapezium has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Crenotrapezium and its relatives

Early Jurassic

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

Found in the same rock

2 taxa

The Paleobiology Database records 1 site for Crenotrapezium, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 13 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

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

No 3D scan of Crenotrapezium 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.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0.