Hadrocystis

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

On record

Recorded, not inferred
Sits inside
CheirocrinidaePBDB
Diet
suspension feederPBDB, for Rhombifera
Life habit
intermediate-level epifaunalPBDB, for Rhombifera
Motility
stationary, attachedPBDB, for Rhombifera
Vision
blindPBDB, for Rhombifera
Environment
marinePBDB, for Echinodermata

Time the record covers

At most 1 million years on record.

The one occurrence read is dated to somewhere between 471.3 Mya and 470.3 Mya, which is a dating window rather than a span.

Ordovician — about 1 of 1 occurrenceOrdovician471–471 Mya — about 0.0 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–471 Mya — about 0.1 occurrences471–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–470 Mya — about 0.0 occurrences471.8 Mya469.8 Mya

1 occurrence of Hadrocystis on record, most of them in the Ordovician. 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

1 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

Antelope Valley — 39.05°N, 116.73°W

Loading coastlines…

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

Hadrocystis and its relatives

Ordovician

Where Hadrocystis and its relatives were recorded in the Ordovician.

Found in the same rock

22 taxa

The Paleobiology Database records 1 site for Hadrocystis, 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 1 occurrence 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 Hadrocystis 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 Hadrocystis, or no answer at all. This entry cannot say which.

No 3D scan of Hadrocystis 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.

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

Keep going

What may have been alongside itCheirocrinidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sprinkle 1974