Grammatodon (Indogrammatodon)

Indogrammatodon L.R.Cox, 1937, a relative of Grammatodon (Indogrammatodon) — not Grammatodon (Indogrammatodon) itself

Not Grammatodon (Indogrammatodon). This is Indogrammatodon L.R.Cox, 1937, a relative — both are Arcidae.

M. Webster · 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
GrammatodonPBDB
Diet
suspension feederPBDB, for Parallelodontidae
Life habit
low-level epifaunalPBDB, for Parallelodontidae
Motility
facultatively mobile, attachedPBDB, for Parallelodontidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 127 million years on record.

The record covers at least 199.5 Mya to 72.2 Mya. No occurrence read is dated outside 201.4 Mya to 66 Mya.

Late Triassic — about 0 of 188 occurrencesEarly Jurassic — about 1 of 188 occurrencesEarly JurassicMiddle Jurassic — about 93 of 188 occurrencesMiddle JurassicLate Jurassic — about 47 of 188 occurrencesLate JurassicEarly Cretaceous — about 0 of 188 occurrencesLate Cretaceous — about 47 of 188 occurrencesLate CretaceousPaleocene — about 0 of 188 occurrences204–199 Mya — about 1 occurrence176–171 Mya — about 0.6 occurrences171–167 Mya — about 3 occurrences167–162 Mya — about 81 occurrences162–157 Mya — about 28 occurrences157–152 Mya — about 15 occurrences152–148 Mya — about 7 occurrences148–143 Mya — about 5 occurrences101–96 Mya — about 0.1 occurrences96–91 Mya — about 2 occurrences91–87 Mya — about 1 occurrence87–82 Mya — about 6 occurrences82–77 Mya — about 12 occurrences77–73 Mya — about 12 occurrences73–68 Mya — about 10 occurrences68–63 Mya — about 4 occurrences199.5 Mya72.2 Mya204 Mya63 Mya

188 occurrences of Grammatodon (Indogrammatodon) on record, most of them in the Middle 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

188 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

32 formations

Chari — 23.30°N, 69.97°EChari — 23.50°N, 70.50°EHabo beds — 23.20°N, 69.80°ELadd — 33.72°N, 117.63°WLadd — 33.75°N, 117.65°WLadd — 33.75°N, 117.65°WMadbi — 14.27°N, 48.56°EMadbi — 14.32°N, 48.45°ENaifa — 14.27°N, 48.56°ENaifa — 14.31°N, 48.48°ENaifa — 14.31°N, 48.43°EMoreno — 37.48°N, 121.23°WMoreno — 37.41°N, 121.19°WMoreno — 37.27°N, 121.18°WMoreno — 37.22°N, 121.12°WGadhada — 23.50°N, 70.50°EChatsworth — 34.22°N, 118.67°WPigeon Point — 37.18°N, 122.38°WPounawea — 46.45°S, 169.55°EPounawea — 46.45°S, 169.70°EGahodleh Shale — 10.25°N, 45.12°EWilliams — 33.83°N, 117.66°WWilliams — 33.71°N, 117.71°WShimonada Siltstone and Sandstone & Kitaama Sandstone and Shale — 34.50°N, 135.00°ENiranohama — 38.67°N, 141.43°ENakanosawa — 37.83°N, 140.92°ETucks Bay — 46.55°S, 169.51°EBoatlanding Bay — 46.42°S, 169.53°EPurakauiti — 46.53°S, 169.55°EMoewaka — 37.37°S, 174.77°ELanongla — 28.00°N, 86.00°EShuomo — 28.00°N, 86.00°EWashtawa — 23.50°N, 70.50°EWanderer Limestone — 10.25°N, 45.12°EDaghani Shale — 10.25°N, 45.12°E

Loading coastlines…

The named rock units Grammatodon (Indogrammatodon) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 34 occurrences have no formation on record, which is common for older literature.

Grammatodon (Indogrammatodon) and its relatives

Middle Jurassic

Where Grammatodon (Indogrammatodon) and its relatives were recorded in the Middle Jurassic.

Found in the same rock

822 taxa

The Paleobiology Database records 107 sites for Grammatodon (Indogrammatodon), 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

37 references

Each of the 188 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. 25 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 Indogrammatodon L.R.Cox, 1937

Source
GBIF
Credit
M. Webster
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 itGrammatodon through timeFormations of the Middle JurassicThe world it lived on

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