Blattulidae

Blattulidae is an extinct family of cockroaches known from the Triassic to the Late Cretaceous. Their distinguishing characteristics include "forewing has long Sc, regular venation with distinct intercalaries and hindwing has simple CuP, branched A1." Due to the poor ability of forewing venation to correctly classify modern cockroaches as a result of extensive homoplasy, the value of this family as a taxonomic unit has been strongly questioned, with some authors considering the family a nomen dubium.

Blattulidae

Peter Vršanský ,Thomas van de Kamp, Dany Azar,Alexander Prokin,L'ubomír Vidlička, Patrik Vagovič · CC BY 3.0 · 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
BlattuloideaPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 153 million years on record.

The record covers at least 237 Mya to 83.6 Mya. No occurrence read is dated outside 239.48 Mya to 72.2 Mya.

Middle Triassic — about 1 of 297 occurrencesLate Triassic — about 5 of 297 occurrencesLate TriassicEarly Jurassic — about 57 of 297 occurrencesEarly JurassicMiddle Jurassic — about 21 of 297 occurrencesLate Jurassic — about 102 of 297 occurrencesLate JurassicEarly Cretaceous — about 101 of 297 occurrencesEarly CretaceousLate Cretaceous — about 10 of 297 occurrencesLate Cretaceous243–237 Mya — about 1.0 occurrences237–231 Mya — about 1 occurrence231–225 Mya — about 0.8 occurrences208–202 Mya — about 2 occurrences202–196 Mya — about 4 occurrences196–191 Mya — about 3 occurrences191–185 Mya — about 3 occurrences185–179 Mya — about 41 occurrences179–173 Mya — about 6 occurrences173–167 Mya — about 11 occurrences167–162 Mya — about 10 occurrences162–156 Mya — about 7 occurrences156–150 Mya — about 64 occurrences150–144 Mya — about 27 occurrences144–138 Mya — about 9 occurrences138–133 Mya — about 4 occurrences133–127 Mya — about 2 occurrences127–121 Mya — about 26 occurrences121–115 Mya — about 33 occurrences115–109 Mya — about 18 occurrences109–104 Mya — about 9 occurrences104–98 Mya — about 9 occurrences98–92 Mya — about 5 occurrences86–80 Mya — about 1 occurrence80–75 Mya — about 0.5 occurrences75–69 Mya — about 0.2 occurrences237 Mya83.6 Mya243 Mya69 Mya

297 occurrences of Blattulidae on record, most of them in the Late 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

297 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

43 formations

Karabastau — 42.90°N, 70.00°EKarabastau — 42.69°N, 70.41°EKarabastau — 42.95°N, 69.92°EDzun-Bain — 45.45°N, 99.13°EDzun-Bain — 45.45°N, 99.13°ESharteg — 44.14°N, 95.79°EJinju — 36.19°N, 128.63°EJinju — 35.87°N, 128.41°EJinju — 35.16°N, 128.11°EJinju — 35.13°N, 128.10°EJinju — 36.25°N, 128.63°EBakhar — 45.22°N, 99.17°ECrato — 7.13°S, 39.70°WYixian — 41.62°N, 120.83°EYixian — 41.15°N, 117.96°EYixian — 41.83°N, 121.13°ECheremkhovskaya — 54.17°N, 100.31°EJiulongshan — 40.96°N, 117.61°EJiulongshan — 40.91°N, 118.32°EZaoshang — 28.01°N, 113.85°EPosidonia Shale — 52.36°N, 10.75°EPosidonia Shale — 52.27°N, 10.68°EHaifanggou — 40.97°N, 120.35°EHaifanggou — 41.47°N, 120.75°EHaifanggou — 41.75°N, 120.75°ESharin-Gol — 45.35°N, 109.85°EShiti — 24.46°N, 111.50°EItat — 56.17°N, 93.17°EUlaan-Ereg — 45.59°N, 107.80°EHanshan — 31.74°N, 118.06°ELos Rastros — 29.88°S, 67.77°WLulworth — 51.08°N, 1.98°WÇakrazboz — 41.78°N, 32.49°EGuanyintan — 27.35°N, 113.45°EGuanyintan — 26.49°N, 111.89°ETuodian — 24.73°N, 101.64°ELaiyang — 36.78°N, 120.67°EKhaya — 62.16°N, 118.60°E

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The named rock units Blattulidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 further formations hold fewer occurrences each and are not listed. 61 occurrences have no formation on record, which is common for older literature.

Blattulidae and its relatives

Late Jurassic

Where Blattulidae and its relatives were recorded in the Late Jurassic.

Found in the same rock

4,092 taxa

The Paleobiology Database records 129 sites for Blattulidae, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

69 references

Each of the 297 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. 57 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 Blattulidae

Credit
Peter Vršanský ,Thomas van de Kamp, Dany Azar,Alexander Prokin,L'ubomír Vidlička, Patrik Vagovič
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Blattulidae 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 itBlattuloidea through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Vishnyakova 1982