Xenoschrammenum alternans

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

On record

Recorded, not inferred
Sits inside
XenoschrammenumPBDB
Diet
suspension feederPBDB, for Lychniscosa
Life habit
epifaunalPBDB, for Lychniscosa
Motility
stationary, attachedPBDB, for Lychniscosa
Vision
blindPBDB, for Hexactinellida
Environment
marinePBDB, for Hexactinellida

Time the record covers

At least 9.8 million years on record.

The record covers at least 159 Mya to 149.2 Mya. No occurrence read is dated outside 161.5 Mya to 145.06 Mya.

Middle Jurassic — about 0 of 12 occurrencesLate Jurassic — about 12 of 12 occurrencesLate Jurassic162–161 Mya — about 0.0 occurrences161–161 Mya — about 0.2 occurrences161–160 Mya — about 0.2 occurrences160–160 Mya — about 0.2 occurrences160–159 Mya — about 0.2 occurrences159–159 Mya — about 1 occurrence159–158 Mya — about 2 occurrences158–157 Mya — about 1 occurrence157–157 Mya — about 1 occurrence157–156 Mya — about 1 occurrence156–156 Mya — about 1 occurrence156–155 Mya — about 1 occurrence155–154 Mya — about 0.4 occurrences153–152 Mya — about 0.0 occurrences152–152 Mya — about 0.2 occurrences152–151 Mya — about 0.2 occurrences151–150 Mya — about 0.2 occurrences150–150 Mya — about 0.2 occurrences150–149 Mya — about 0.2 occurrences149–149 Mya — about 0.1 occurrences149–148 Mya — about 0.1 occurrences148–147 Mya — about 0.1 occurrences147–147 Mya — about 0.1 occurrences147–146 Mya — about 0.1 occurrences146–146 Mya — about 0.1 occurrences146–145 Mya — about 0.1 occurrences145–145 Mya — about 0.0 occurrences159 Mya149.2 Mya162 Mya144.6 Mya

12 occurrences of Xenoschrammenum alternans on record, most of them in the Late 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

12 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

2 formations

Jasna Gora — 50.07°N, 19.62°EJasna Gora — 50.42°N, 19.35°EZawodzie — 50.47°N, 19.55°E

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The named rock units Xenoschrammenum alternans has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Xenoschrammenum alternans and its relatives

Late Jurassic

Where Xenoschrammenum alternans and its relatives were recorded in the Late Jurassic.

Found in the same rock

181 taxa

The Paleobiology Database records 10 sites for Xenoschrammenum alternans, 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 12 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 Xenoschrammenum alternans 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 Xenoschrammenum alternans, or no answer at all. This entry cannot say which.

No 3D scan of Xenoschrammenum alternans 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 itXenoschrammenum through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Schrammen 1937)