Arachnolasma

Arachnolasma

via iDigBio · CC BY · via iDigBio. 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
DibunophyllinaePBDB
Diet
suspension feederPBDB, for Rugosa
Life habit
epifaunalPBDB, for Rugosa
Motility
stationary, attachedPBDB, for Rugosa
Vision
blindPBDB, for Anthozoa
Environment
marinePBDB, for Rugosa

Time the record covers

At least 41 million years on record.

The record covers at least 335.1 Mya to 293.52 Mya. No occurrence read is dated outside 346.7 Mya to 290.1 Mya.

Carboniferous — about 46 of 48 occurrencesCarboniferousPermian — about 2 of 48 occurrencesPermian348–346 Mya — about 0.2 occurrences346–344 Mya — about 0.5 occurrences344–342 Mya — about 0.5 occurrences342–340 Mya — about 0.5 occurrences340–338 Mya — about 1 occurrence338–336 Mya — about 1 occurrence336–334 Mya — about 7 occurrences334–332 Mya — about 7 occurrences332–330 Mya — about 7 occurrences330–328 Mya — about 5 occurrences328–326 Mya — about 5 occurrences326–324 Mya — about 5 occurrences324–322 Mya — about 3 occurrences322–320 Mya — about 1 occurrence320–318 Mya — about 1 occurrence318–316 Mya — about 1 occurrence316–314 Mya — about 0.7 occurrences295–293 Mya — about 0.4 occurrences293–291 Mya — about 1 occurrence291–289 Mya — about 0.5 occurrences335.1 Mya293.52 Mya348 Mya289 Mya

48 occurrences of Arachnolasma on record, most of them in the Carboniferous. 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

48 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

Idmarrach — 33.53°N, 5.39°WIdmarrach — 33.43°N, 5.22°WYamansu — 41.90°N, 93.77°EIchinotani — 36.00°N, 137.00°EShangsi — 26.01°N, 106.76°EHeshilafu — 37.29°N, 76.25°EHeshilafu — 37.37°N, 75.98°ECeshui — 23.00°N, 113.90°ETizra — 33.53°N, 5.39°WAkerchi — 33.53°N, 5.39°WAssekaifaf — 27.32°N, 9.73°EDjebel Ouarkziz — 28.36°N, 9.48°WBou-Rifi — 32.92°N, 5.65°WTirhela — 33.44°N, 5.23°W

Loading coastlines…

The named rock units Arachnolasma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Arachnolasma and its relatives

Carboniferous

Where Arachnolasma and its relatives were recorded in the Carboniferous.

Found in the same rock

99 taxa

The Paleobiology Database records 16 sites for Arachnolasma, 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

17 references

Each of the 48 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. 5 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 Arachnolasma

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Arachnolasma 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.

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

Keep going

What may have been alongside itDibunophyllinae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Grabau 1922