Trogiomorpha
Trogiomorpha is one of the three major suborders of barklice, booklice, and parasitic lice in the order Psocodea, alongside Troctomorpha and Psocomorpha. There are about eight families and more than 430 described species in Trogiomorpha. Trogiomorpha is widely agreed to be the earliest diverging of the three suborders, and retains the most primitive characteristics.

Arp · Public Domain · 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
- PsocodeaPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 121 million years on record.
The record covers at least 121.4 Mya to 11.7 ka. No occurrence read is dated outside 125.77 Mya to 0 Mya.
94 occurrences of Trogiomorpha on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. 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
94 occurrences- Early Cretaceous35%
- Late Cretaceous44%
- Eocene14%
- Miocene3%
- Holocene4%
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
10 formations
- Escucha Formation10
- Argiles d'lignite du Soissonnais Formation6
- Kheta Formation3
- Las Penosas Formation2
- Raritan Formation · Potomac Group1
- Barstow Formation1
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The named rock units Trogiomorpha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 67 occurrences have no formation on record, which is common for older literature.
Trogiomorpha and its relatives
Late CretaceousWhere Trogiomorpha and its relatives were recorded in the Late Cretaceous.
Found in the same rock
3,077 taxa- Araneoidea4 sites
- Archaeatropos alavensis4 sites
- Archipsocus puber4 sites
- Culicoides4 sites
- Psocodea4 sites
- Rhagionidae4 sites
- Aleyrodidae3 sites
- Archaeatropos randatae3 sites
- Atriculicoides3 sites
- Austroconops3 sites
- Berothidae3 sites
- Burmomerope clara3 sites
- Forcipomyia3 sites
- Formica flori3 sites
- Gerontodacus skalskii3 sites
- Isoptera3 sites
- Libanochlites neocomicus3 sites
- Longiantennum fashengi3 sites
- Mesoraphidiidae3 sites
- Oligopsychopsis groehni3 sites
- Orchestina3 sites
- Paleopsychoda jacquelinae3 sites
- Psocidus multiplex3 sites
- Psyllipsocus mili3 sites
The Paleobiology Database records 42 sites for Trogiomorpha, 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
49 references- New barklice (Psocodea, Trogiomorpha) from Lower Cretaceous Spanish amber8
- New records of barklice (Psocodea, Empheriidae) from the Bqaatouta and Baskinta amber (early Barremian, Early Cretaceous) in Lebanon5
- Four new Psocoptera from Lebanese amber (Insecta: Psocomorpha: Trogiomorpha)5
- New Psocoptera (Insecta) from the lowermost Eocene Amber of Oise, France4
- New Psocoptera in the Early Cretaceous amber of SW France and Lebanon (Insecta: Psocoptera: Trogiomorpha)4
- The first detailed morphological treatment of a Cretaceous psocid and the character evolution of Trogiomorpha (Insecta: Psocodea)3
- First record of fossil psocodeans in copula from mid-Cretaceous Burmese amber3
- New psocids (Psocodea: Prionoglarididae, Psyllipsocidae) from Cretaceous Burmese amber deposits3
- New Prionoglarididae from Burmese amber (Psocodea: Trogiomorpha: Prionoglaridetae)3
- Kaddumi, 20073
- New genera and species of empheriids (Psocoptera: Empheriidae) from the Cretaceous amber of Alava, northern Spain3
- Psocoptera in Late Cretaceous insect-bearing resins from the Taimyr3
Each of the 94 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. 37 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 Trogiomorpha
- Source
- Wikipedia/Commons
- Credit
- Arp
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Trogiomorpha 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 itPsocodea through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Roesler 1940