Tommotiida

Tommotiids are an extinct group of Cambrian invertebrates thought to be early total-group lophophorates, including members of the lophophorate stem group, as well as early diverging members of the crown group.

Tommotiida

Jin Guo, Luke A Parry, Jakob Vinther, Gregory D Edgecombe, Fan Wei, Jun Zhao, Yang Zhao, Olivier Béthoux, Xiangtong L… · CC BY-SA 4.0 · via Wikipedia/Commons. 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
BrachiopodaPBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 17 million years on record.

The record covers at least 525.5 Mya to 508.2 Mya. No occurrence read is dated outside 538.8 Mya to 499.5 Mya.

Cambrian — about 832 of 832 occurrencesCambrian540–538 Mya — about 4 occurrences538–537 Mya — about 10 occurrences537–535 Mya — about 10 occurrences535–534 Mya — about 10 occurrences534–533 Mya — about 10 occurrences533–531 Mya — about 10 occurrences531–530 Mya — about 11 occurrences530–529 Mya — about 13 occurrences529–527 Mya — about 16 occurrences527–526 Mya — about 16 occurrences526–525 Mya — about 44 occurrences525–523 Mya — about 58 occurrences523–522 Mya — about 58 occurrences522–521 Mya — about 69 occurrences521–519 Mya — about 88 occurrences519–518 Mya — about 88 occurrences518–516 Mya — about 88 occurrences516–515 Mya — about 77 occurrences515–514 Mya — about 50 occurrences514–512 Mya — about 35 occurrences512–511 Mya — about 18 occurrences511–510 Mya — about 14 occurrences510–508 Mya — about 13 occurrences508–507 Mya — about 13 occurrences507–506 Mya — about 5 occurrences506–504 Mya — about 1 occurrence504–503 Mya — about 0.8 occurrences503–501 Mya — about 0.8 occurrences501–500 Mya — about 0.8 occurrences500–499 Mya — about 0.3 occurrences525.5 Mya508.2 Mya539.6 Mya498.7 Mya

832 occurrences of Tommotiida on record, most of them in the Cambrian. 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

832 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

66 formations

Ajax Limestone — 30.59°S, 138.33°EWirrapowie Limestone — 31.77°S, 138.60°EWirrapowie Limestone — 31.74°S, 138.61°EWirrapowie Limestone — 30.72°S, 139.20°EWirrapowie Limestone — 30.79°S, 139.14°EWilkawillina Limestone — 31.41°S, 138.54°EWilkawillina Limestone — 31.30°S, 138.93°EWilkawillina Limestone — 30.72°S, 139.20°EWilkawillina Limestone — 31.85°S, 140.63°EPestrotsvet — 57.35°N, 131.20°EPestrotsvet — 57.67°N, 131.83°EPestrotsvet — 60.70°N, 124.72°EPestrotsvet — 60.82°N, 125.00°EPestrotsvet — 60.92°N, 125.77°EPestrotsvet — 60.83°N, 125.40°EPestrotsvet — 58.50°N, 129.50°EPestrotsvet — 58.75°N, 128.00°EPestrotsvet — 58.75°N, 127.00°EPestrotsvet — 60.83°N, 125.33°EPestrotsvet — 66.40°N, 112.28°EPestrotsvet — 71.83°N, 107.00°EPestrotsvet — 61.29°N, 135.50°EMernmerna Formation — 30.72°S, 139.18°EMernmerna Formation — 31.85°S, 140.63°EMernmerna Formation — 31.00°S, 139.26°EMernmerna Formation — 31.01°S, 139.24°EMernmerna — 31.19°S, 138.87°EMernmerna — 31.00°S, 139.26°EMernmerna — 31.02°S, 139.24°EMernmerna — 30.79°S, 139.14°EWeymouth — 42.03°N, 71.38°WWeymouth — 41.95°N, 71.28°WWeymouth — 42.43°N, 70.92°WWeymouth — 42.22°N, 70.95°WLower Comley — 52.56°N, 2.76°WLower Comley — 52.58°N, 2.67°WLower Comley — 52.65°N, 2.73°WLower Comley — 52.54°N, 2.80°WParara — 34.70°S, 137.71°EParara — 34.06°S, 138.02°EParara — 34.73°S, 137.63°EParara — 34.80°S, 137.69°EFosters Point — 46.00°N, 60.00°WFosters Point — 45.77°N, 60.29°WAndamooka Limestone — 30.12°S, 137.16°EAndamooka Limestone — 30.12°S, 137.01°EAndamooka Limestone — 30.12°S, 137.15°EParara Limestone — 34.92°S, 137.80°ETyuser — 71.57°N, 127.37°ETyuser — 71.52°N, 127.37°ETyuser — 71.07°N, 127.43°ETyuser — 71.03°N, 127.48°EKulpara Limestone — 34.92°S, 137.80°EDengying — 30.77°N, 111.32°EDengying — 32.94°N, 107.70°EDengying — 26.63°N, 105.85°EDengying — 28.27°N, 103.40°EDengying — 33.67°N, 109.46°EChapel Island — 46.92°N, 56.00°WChapel Island — 45.62°N, 61.97°WChapel Island — 47.00°N, 56.00°WChapel Island — 47.07°N, 55.87°WKrasnoporog — 67.22°N, 87.03°EKrasnoporog — 67.14°N, 86.75°ECuslett — 46.00°N, 60.00°WCuslett — 45.77°N, 60.29°WTodd River Dolomite — 23.52°S, 134.47°ETodd River Dolomite — 23.90°S, 134.33°EChulaktau — 43.47°N, 69.87°EChulaktau — 43.62°N, 69.73°EChulaktau — 43.47°N, 69.97°EChulaktau — 43.68°N, 69.68°EBrigus — 45.77°N, 60.29°WShiyantou — 27.93°N, 103.56°EKulpara — 34.92°S, 137.80°EKulpara — 34.70°S, 137.71°EKulpara — 34.73°S, 137.63°EShackleton Limestone — 80.75°S, 158.25°EShackleton Limestone — 81.95°S, 158.55°EShackleton Limestone — 82.22°S, 160.31°E

Loading coastlines…

The named rock units Tommotiida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 42 further formations hold fewer occurrences each and are not listed. 77 occurrences have no formation on record, which is common for older literature.

Tommotiida and its relatives

Cambrian

Where Tommotiida and its relatives were recorded in the Cambrian.

Found in the same rock

751 taxa

The Paleobiology Database records 424 sites for Tommotiida, and this reads 240 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

72 references

Each of the 832 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. 60 further references are not listed. 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 Tommotiida

Credit
Jin Guo, Luke A Parry, Jakob Vinther, Gregory D Edgecombe, Fan Wei, Jun Zhao, Yang Zhao, Olivier Béthoux, Xiangtong L…
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Tommotiida was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itBrachiopoda through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Missarzhevsky 1970)