Didelphodon
Didelphodon is a genus of extinct metatherian mammal from the Late Cretaceous of North America.

MCDinosaurhunter · CC BY-SA 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
- StagodontidaePBDB
- Diet
- durophagePBDB
- Life habit
- aquaticPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Stagodontidae
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.
96 occurrences of Didelphodon 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
96 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 Group51
- Lance Formation29
- Scollard Formation6
- Horseshoe Canyon Formation · Edmonton Group3
- Frenchman Formation3
- Marshalltown Formation · Matawan Group1
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The named rock units Didelphodon has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Didelphodon and its relatives
Late CretaceousWhere Didelphodon and its relatives were recorded in the Late Cretaceous.
Found in the same rock
422 taxa- Meniscoessus robustus51 sites
- Cimolodon nitidus33 sites
- Myledaphus bipartitus28 sites
- Mesodma thompsoni27 sites
- Protolambda hatcheri27 sites
- Trionychidae26 sites
- Lepisosteus occidentalis25 sites
- Scapherpeton tectum25 sites
- Gypsonictops hypoconus24 sites
- Brachychampsa montana23 sites
- Borealosuchus sternbergii22 sites
- Champsosaurus22 sites
- Cimolomys gracilis22 sites
- Paronychodon21 sites
- Protolambda florencae21 sites
- Pediomys elegans20 sites
- Ceratopsidae18 sites
- Chelydridae18 sites
- Lonchidion selachos18 sites
- Theropoda18 sites
- Compsemys victa16 sites
- Habrosaurus dilatus16 sites
- Baenidae15 sites
- Cyclurus fragosus15 sites
The Paleobiology Database records 85 sites for Didelphodon, 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
29 references- Fossil mammals from the type Lance Formation, Wyoming. Part II. Marsupialia14
- The Bug Creek problem and the Cretaceous-Tertiary transition at McGuire Creek, Montana13
- The mammals and horned dinosaurs of the Lance Formation of Niobrara County, Wyoming12
- A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana9
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota7
- Latest Cretaceous mammals of upper part of Edmonton Formation of Alberta, Canada, and review of marsupial-placental dichotomy in mammalian evolution5
- A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials4
- Cretaceous mammals from Montana4
- Late Cretaceous mammals of western South Dakota, 19743
- Stagodontid marsupials from the Late Cretaceous of Canada and their systematic and functional implications2
- Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana2
- A new species of Didelphodon Marsh (Marsupialia) from the Upper Cretaceous of Alberta, Canada: paleobiology and phylogeny2
Each of the 96 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. 17 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 content3
Picture of Didelphodon
- Source
- Wikipedia/Commons
- Credit
- MCDinosaurhunter
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Didelphodon vorax · uwbm:94500
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
- Source
- Wikipedia, “Didelphodon”
- 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 itStagodontidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Marsh 1889