Bystromena

Bystromena

W. F. Whittard · CC0 · via GBIF. 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
GlyptomeninaePBDB
Diet
suspension feederPBDB, for Strophomenida
Life habit
epifaunalPBDB, for Strophomenida
Motility
stationaryPBDB, for Strophomenida
Vision
blindPBDB, for Strophomenata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 1 million years on record.

Every occurrence read is dated to somewhere between 458.2 Mya and 457.2 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 8 of 8 occurrencesOrdovician458–458 Mya — about 0.3 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–458 Mya — about 0.5 occurrences458–457 Mya — about 0.5 occurrences457–457 Mya — about 0.5 occurrences457–457 Mya — about 0.5 occurrences457–457 Mya — about 0.5 occurrences457–457 Mya — about 0.3 occurrences458.7 Mya456.7 Mya

8 occurrences of Bystromena 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

8 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

Spy Wood Grit — 52.67°N, 2.00°WSpy Wood Grit — 52.60°N, 3.03°WLas Plantas — 30.00°S, 69.00°W

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

Bystromena and its relatives

Ordovician

Where Bystromena and its relatives were recorded in the Ordovician.

Found in the same rock

41 taxa

The Paleobiology Database records 8 sites for Bystromena, 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

3 references

Each of the 8 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. 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 Bystromena

Source
GBIF
Credit
W. F. Whittard
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

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