Pediomys
Pediomys is an extinct genus of pediomyid marsupial from the Late Cretaceous of North America.

Thomas E. Williamson, Stephen L. Brusatte, Gregory P. Wilson · CC BY 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
- PediomyidaePBDB
- Diet
- insectivorePBDB
- Life habit
- ground dwellingPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
40 occurrences of Pediomys on record, most of them in the Late Cretaceous. 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
40 occurrences- Late Cretaceous100%
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
9 formations
- Hell Creek Formation · Montana Group20
- Lance Formation10
- Frenchman Formation3
- Scollard Formation2
- Wahweap Formation1
- Dinosaur Park Formation · Belly River Group1
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The named rock units Pediomys has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Pediomys and its relatives
Late CretaceousWhere Pediomys and its relatives were recorded in the Late Cretaceous.
Found in the same rock
382 taxa- Meniscoessus robustus29 sites
- Cimolodon nitidus23 sites
- Protolambda hatcheri20 sites
- Didelphodon vorax18 sites
- Mesodma thompsoni17 sites
- Cimolomys gracilis16 sites
- Gypsonictops hypoconus16 sites
- Gypsonictops illuminatus14 sites
- Chamops segnis13 sites
- Leptalestes krejcii13 sites
- Mesodma formosa13 sites
- Turgidodon rhaister13 sites
- Paronychodon12 sites
- Protolambda florencae12 sites
- Alphadon marshi11 sites
- Batodon tenuis11 sites
- Glasbius twitchelli11 sites
- Leptochamops denticulatus11 sites
- Lonchidion selachos11 sites
- Myledaphus bipartitus11 sites
- Nortedelphys jasoni11 sites
- Brachychampsa montana10 sites
- Cimolestes incisus10 sites
- Lepisosteus occidentalis10 sites
The Paleobiology Database records 39 sites for Pediomys, 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
19 references- The Bug Creek problem and the Cretaceous-Tertiary transition at McGuire Creek, Montana9
- Fossil mammals from the type Lance Formation, Wyoming. Part II. Marsupialia5
- The mammals and horned dinosaurs of the Lance Formation of Niobrara County, Wyoming4
- The Wounded Knee local fauna and mammalian evolution near the Cretaceous-Tertiary boundary, Saskatchewan, Canada2
- Mammal evolution near the Cretaceous-Tertiary Boundary2
- Late Cretaceous mammals of western South Dakota, 19742
- A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana2
- Latest Cretaceous mammals of upper part of Edmonton Formation of Alberta, Canada, and review of marsupial-placental dichotomy in mammalian evolution2
- Cretaceous mammals from Montana2
- Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana1
- Fossil Vertebrates from the Cerro del Pueblo Formation, Coahuila, Mexico, and the Distribution of Late Campanian (Cretaceous) Terrestrial Vertebrate Faunas1
- Late Cretaceous mammals from Cedar Canyon, southwestern Utah1
Each of the 40 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. 7 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 Pediomys
- Source
- Wikipedia/Commons
- Credit
- Thomas E. Williamson, Stephen L. Brusatte, Gregory P. Wilson
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Pediomys was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Pediomys”
- 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 itPediomyidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Marsh 1889