Sylvilagus
Cottontail rabbits comprise the genus Sylvilagus, which is in the family Leporidae. They are found in the Americas. Most Sylvilagus species have stub tails with white undersides that show when they retreat, giving them their characteristic name, but this feature is not present in all Sylvilagus species, nor is it unique to the genus. Their fur ranges from brown to gray and changes throughout the year, depending on the season.

Becky Matsubara from El Sobrante, California · CC BY 2.0 · 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- Also called
- cottontail rabbitPBDB
- Sits inside
- LeporidaePBDB
- Diet
- grazer, browserPBDB, for Leporidae
- Life habit
- ground dwellingPBDB, for Leporidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 1.7 million years on record.
The record covers at least 1.8 Mya to 11.7 ka. No occurrence read is dated outside 4.7 Mya to 0 Mya.
304 occurrences of Sylvilagus on record, most of them in the Pleistocene. 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
304 occurrences- Pliocene7%
- Pleistocene79%
- Holocene14%
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
30 formations
- Palm Spring Formation30
- "unnamed sandstone" Formation14
- Kingsdown Formation5
- Pauba Formation5
- St. David Formation4
- San Timoteo Formation4
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The named rock units Sylvilagus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 210 occurrences have no formation on record, which is common for older literature.
Sylvilagus and its relatives
PleistoceneWhere Sylvilagus and its relatives were recorded in the Pleistocene.
Found in the same rock
1,785 taxa- Equus108 sites
- Neotoma72 sites
- Odocoileus virginianus71 sites
- Peromyscus69 sites
- Canis latrans49 sites
- Procyon lotor47 sites
- Dasypus bellus45 sites
- Microtus45 sites
- Camelops44 sites
- Lepus44 sites
- Thomomys43 sites
- Lynx rufus42 sites
- Odocoileus41 sites
- Scalopus aquaticus38 sites
- Dipodomys36 sites
- Mephitis mephitis35 sites
- Microtus pennsylvanicus35 sites
- Aenocyon dirus33 sites
- Neotoma floridana33 sites
- Paramylodon harlani31 sites
- Hemiauchenia30 sites
- Hemiauchenia macrocephala30 sites
- Ursus americanus30 sites
- Perognathinae29 sites
The Paleobiology Database records 264 sites for Sylvilagus, and this reads 240 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
134 references- Biostratigraphy of Blancan and Irvingtonian mammals in the Fish Creek-Vallecito Creek section, southern California, and a review of the Blancan-Irvingtonian boundary30
- Chronology of Florida Pleistocene mammals17
- A review of the biostratigraphy of Pliocene and Pleistocene sediments in the Elsinore Fault Zone, Riverside County, California15
- Preliminary taphonomic analyses of the mammalian microfauna.14
- A late Pleistocene and early Holocene mammalian fauna from Little Beaver Cave, Central Ozarks, Missouri.8
- Overview of the geology and vertebrate biochronology of the Leisey Shell Pit Local Fauna, Hillsborough County, Florida7
- Quaternary vertebrate localities of Virginia and their avian and mammalian fauna6
- Sabertooth cat, Smilodon floridanus (Leidy), and associated fauna from a Tennessee Cave (40 Dv 40), the First American Bank site6
- Mid to late Holocene mammals from Bighorn Cave, Arizona5
- An Irvingtonian species of Brachylagus (mammalia: Lagomorpha) from Porcupine Cave, Park County, Colorado5
- A catalogue of late Quaternary Vertebrates from California: Part Two, Mammals5
- North American Leporinae (Mammalia: Lagomorpha) from late Miocene (Clarendonian) to latest Pliocene (Blancan)5
Each of the 304 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. 122 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 Sylvilagus
- Source
- Wikipedia/Commons
- Credit
- Becky Matsubara from El Sobrante, California
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Credit
- Zoology Collection
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Sylvilagus sp. · nml:1980.354
3D model
- Source
- Sketchfab
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itLeporidae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1867