Holcothyris trigonalis

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

On record

Recorded, not inferred
Sits inside
HolcothyrisPBDB
Diet
suspension feederPBDB, for Postepithyrididae
Life habit
low-level epifaunalPBDB, for Postepithyrididae
Motility
stationaryPBDB, for Postepithyrididae
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 2.9 million years on record.

Every occurrence read is dated to somewhere between 168.2 Mya and 165.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Jurassic — about 13 of 13 occurrencesMiddle Jurassic168–168 Mya — about 0.1 occurrences168–168 Mya — about 0.6 occurrences168–168 Mya — about 0.6 occurrences168–168 Mya — about 0.6 occurrences168–168 Mya — about 0.6 occurrences168–168 Mya — about 0.6 occurrences168–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–167 Mya — about 0.6 occurrences167–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–166 Mya — about 0.6 occurrences166–165 Mya — about 0.6 occurrences165–165 Mya — about 0.6 occurrences165–165 Mya — about 0.1 occurrences168.7 Mya164.8 Mya

13 occurrences of Holcothyris trigonalis 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

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

1 formation

Namyau Beds — 23.43°N, 98.75°ENamyau Beds — 22.35°N, 97.16°ENamyau Beds — 22.55°N, 97.38°ENamyau Beds — 22.42°N, 97.35°ENamyau Beds — 21.63°N, 99.86°ENamyau Beds — 23.49°N, 97.85°E

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The named rock units Holcothyris trigonalis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Holcothyris trigonalis and its relatives

Middle Jurassic

Where Holcothyris trigonalis and its relatives were recorded in the Middle Jurassic.

Found in the same rock

67 taxa

The Paleobiology Database records 12 sites for Holcothyris trigonalis, 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 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 Holcothyris trigonalis 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 Holcothyris trigonalis, or no answer at all. This entry cannot say which.

No 3D scan of Holcothyris trigonalis 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 itHolcothyris through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Buckman 1917