Leptalestes cooki
via iDigBio · 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
- LeptalestesPBDB
- Diet
- omnivorePBDB, for Metatheria
- Life habit
- scansorialPBDB, for Theria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At least 6.2 million years on record.
The record covers at least 72.2 Mya to 66 Mya. No occurrence read is dated outside 83.6 Mya to 63.4 Mya.
22 occurrences of Leptalestes cooki 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
22 occurrencesThese 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
7 formations
- Hell Creek Formation · Montana Group9
- Lance Formation8
- Kirtland Formation1
- St. Mary River Formation1
- Fox Hills Formation · Montana Group1
- Laramie Formation1
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The named rock units Leptalestes cooki has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Leptalestes cooki and its relatives
Late CretaceousWhere Leptalestes cooki and its relatives were recorded in the Late Cretaceous.
Found in the same rock
297 taxa- Meniscoessus robustus18 sites
- Cimolodon nitidus17 sites
- Mesodma thompsoni16 sites
- Protolambda hatcheri15 sites
- Didelphodon vorax14 sites
- Gypsonictops hypoconus14 sites
- Alphadon marshi11 sites
- Myledaphus bipartitus10 sites
- Pediomys elegans10 sites
- Brachychampsa montana9 sites
- Cimolomys gracilis9 sites
- Mesodma formosa9 sites
- Opisthotriton kayi9 sites
- Protolambda florencae9 sites
- Trionychidae9 sites
- Belonostomus longirostris8 sites
- Champsosaurus8 sites
- Cimolestes incisus8 sites
- Lepisosteus occidentalis8 sites
- Leptalestes krejcii8 sites
- Borealosuchus sternbergii7 sites
- Habrosaurus dilatus7 sites
- Mesodma7 sites
- Prodesmodon copei7 sites
The Paleobiology Database records 22 sites for Leptalestes cooki, 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
12 references- Fossil mammals from the type Lance Formation, Wyoming. Part II. Marsupialia8
- A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana3
- Mammals from the end of the age of dinosaurs in North Dakota and southeastern Montana, with a reappraisal of geographic differentiation among Lancian mammals2
- New Late Cretaceous microvertebrate assemblage from the Campanian–Maastrichtian Williams Fork Formation, northwestern Colorado, USA, and its paleoenvironmental implications1
- Early mammalian recovery after the end-Cretaceous mass extinction: A high-resolution view from McGuire Creek area, Montana, USA1
- Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana1
- New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications1
- Fossil Vertebrate Collections1
- Late Cretaceous mammal horizons from the San Juan Basin, New Mexico1
- Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages"1
- Mammal evolution near the Cretaceous-Tertiary Boundary1
- Late Cretaceous mammals of western South Dakota, 19741
Each of the 22 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. 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 Leptalestes cooki
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Leptalestes cooki was found in Smithsonian Open Access and Sketchfab.
MorphoSource 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 itLeptalestes through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Clemens 1966)