Rhombotrypa

Rhombotrypa is an extinct trepostome bryozoan genus from the Ordovician Period, first described in 1866 by Carl Ludwig Rominger. Rhombotrypa quadrata is one of the few trepostome bryozoans known from the Cincinnatian that can be recognized externally, without analyzing the internal structure of the fossils.

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

On record

Recorded, not inferred
Sits inside
AmplexoporidaePBDB
Diet
suspension feederPBDB, for Stenolaemata
Life habit
epifaunalPBDB, for Bryozoa
Motility
stationary, attachedPBDB, for Stenolaemata
Vision
blindPBDB, for Stenolaemata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 150 million years on record.

The record covers at least 449.6 Mya to 298.9 Mya. No occurrence read is dated outside 458.2 Mya to 290.1 Mya.

Ordovician — about 27 of 29 occurrencesOrdovicianSilurian — about 1 of 29 occurrencesSilurianDevonian — about 0 of 29 occurrencesCarboniferous — about 0 of 29 occurrencesPermian — about 1 of 29 occurrences462–456 Mya — about 0.3 occurrences456–450 Mya — about 2 occurrences450–444 Mya — about 24 occurrences444–438 Mya — about 0.8 occurrences438–432 Mya — about 0.3 occurrences432–427 Mya — about 0.3 occurrences427–421 Mya — about 0.2 occurrences304–298 Mya — about 0.1 occurrences298–293 Mya — about 0.7 occurrences293–287 Mya — about 0.3 occurrences449.6 Mya298.9 Mya462 Mya287 Mya

29 occurrences of Rhombotrypa 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

29 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

12 formations

Waynesville — 39.00°N, 84.00°WWaynesville — 39.08°N, 85.25°WWaynesville — 41.00°N, 86.69°WWaynesville — 39.57°N, 84.03°WWhitewater — 39.83°N, 84.89°WWhitewater — 39.00°N, 84.00°WWhitewater — 38.00°N, 85.50°WStonington — 45.67°N, 86.97°WLiberty — 39.00°N, 84.00°WLiberty — 38.20°N, 85.57°WArnheim — 39.00°N, 84.00°WArnheim — 35.50°N, 86.50°WGeorgian Bay — 45.75°N, 81.67°WGeorgian Bay — 45.75°N, 81.60°WWaynesville — 44.72°N, 80.65°WWaynesville — 45.75°N, 81.83°WElkhorn — 39.00°N, 84.00°WMannie — 35.50°N, 86.50°WIrondequoit — 43.12°N, 79.07°WBills Creek — 45.85°N, 85.88°WShakhtau Reef — 53.63°N, 55.93°E

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The named rock units Rhombotrypa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Rhombotrypa and its relatives

Ordovician

Where Rhombotrypa and its relatives were recorded in the Ordovician.

Found in the same rock

411 taxa

The Paleobiology Database records 27 sites for Rhombotrypa, 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

12 references

Each of the 29 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 Rhombotrypa 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 Rhombotrypa, or no answer at all. This entry cannot say which.

No 3D scan of Rhombotrypa 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 itAmplexoporidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.