Vietnamia

Vietnamia is a genus of trilobites. A new species, V. yushanensis, was described from the late Ordovician of China by Dong-Chan Lee in 2011. It is also found in the U.A.E.

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

On record

Recorded, not inferred
Sits inside
ReedocalymeninaePBDB
Diet
carnivorePBDB, for Calymenidae
Life habit
nektobenthicPBDB, for Calymenidae
Motility
actively mobilePBDB, for Calymenidae
Vision
well-developedPBDB, for Calymenidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 500 thousand years on record.

The record covers at least 449.5 Mya to 449 Mya. No occurrence read is dated outside 458.2 Mya to 443.1 Mya.

Ordovician — about 23 of 23 occurrencesOrdovicianSilurian — about 0 of 23 occurrences459–458 Mya — about 0.0 occurrences458–458 Mya — about 0.1 occurrences458–457 Mya — about 0.1 occurrences457–457 Mya — about 0.1 occurrences457–456 Mya — about 0.1 occurrences456–455 Mya — about 0.1 occurrences455–455 Mya — about 0.1 occurrences455–454 Mya — about 0.1 occurrences454–454 Mya — about 0.1 occurrences454–453 Mya — about 0.1 occurrences453–453 Mya — about 0.1 occurrences453–452 Mya — about 1 occurrence452–452 Mya — about 2 occurrences452–451 Mya — about 2 occurrences451–451 Mya — about 2 occurrences451–450 Mya — about 2 occurrences450–450 Mya — about 2 occurrences450–449 Mya — about 2 occurrences449–449 Mya — about 1 occurrence449–448 Mya — about 1 occurrence448–447 Mya — about 1 occurrence447–447 Mya — about 1 occurrence447–446 Mya — about 1 occurrence446–446 Mya — about 1 occurrence446–445 Mya — about 1 occurrence445–445 Mya — about 0.4 occurrences445–444 Mya — about 0.1 occurrences444–444 Mya — about 0.1 occurrences444–443 Mya — about 0.1 occurrences443–443 Mya — about 0.0 occurrences449.5 Mya – 449 Mya458.7 Mya442.6 Mya

23 occurrences of Vietnamia 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

23 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

8 formations

Xiazhen — 28.57°N, 118.30°EPunta Serpeddi — 39.35°N, 9.18°EPunta Serpeddi — 39.92°N, 9.55°EBenjamin — 41.28°S, 146.05°EChahgonbad — 33.83°N, 54.00°ENa Mo — 21.73°N, 106.05°ERann — 25.43°N, 56.07°EArndell Sandstone — 42.64°S, 146.49°EShahriomon — 39.17°N, 67.30°E

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

Vietnamia and its relatives

Ordovician

Where Vietnamia and its relatives were recorded in the Ordovician.

Found in the same rock

40 taxa

The Paleobiology Database records 14 sites for Vietnamia, 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

8 references

Each of the 23 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 content0

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

No 3D scan of Vietnamia 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.

The description on this site

Licence
CC BY-SA 4.0

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Kobayashi 1960