Cygnus
Swans are birds of the genus Cygnus within the family Anatidae. The swans' closest relatives include geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae, forming the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae. They are the largest waterfowl and are often among the largest flighted birds in their range.
Geni · CC BY-SA 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
- CygninaePBDB
- Diet
- folivore, granivorePBDB, for Anserinae
- Life habit
- volantPBDB, for Anserinae
- Motility
- actively mobilePBDB, for Theropoda
- Environment
- freshwaterPBDB, for Anserinae
Time the record covers
At least 11 million years on record.
The record covers at least 11.63 Mya to 11.7 ka. No occurrence read is dated outside 12.8 Mya to 0 Mya.
72 occurrences of Cygnus 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
72 occurrences- Miocene4%
- Pliocene13%
- Pleistocene44%
- Holocene39%
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
13 formations
- Hagerman Formation2
- Khapry Formation1
- Yorktown Formation · Chesapeake Group1
- Cromer Forest Bed Formation1
- Hillgrove Formation1
- Diest Formation1
Loading coastlines…
The named rock units Cygnus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 58 occurrences have no formation on record, which is common for older literature.
Cygnus and its relatives
PleistoceneWhere Cygnus and its relatives were recorded in the Pleistocene.
Found in the same rock
1,609 taxa- Anas platyrhynchos17 sites
- Anatidae14 sites
- Branta canadensis13 sites
- Equus11 sites
- Larus11 sites
- Anas10 sites
- Anas crecca8 sites
- Aquila chrysaetos8 sites
- Canis8 sites
- Haliaeetus leucocephalus8 sites
- Mareca americana8 sites
- Podilymbus podiceps8 sites
- Anser caerulescens7 sites
- Corvus corax7 sites
- Meleagris gallopavo7 sites
- Rangifer tarandus7 sites
- Spatula clypeata7 sites
- Anas acuta6 sites
- Anas chlorotis6 sites
- Anas crecca carolinensis6 sites
- Cervus elaphus6 sites
- Ectopistes migratorius6 sites
- Fulica americana6 sites
- Passeriformes6 sites
The Paleobiology Database records 66 sites for Cygnus, 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
53 references- The history of the Chatham Islands' bird fauna of the last 7000 years - a chronicle of change and extinction5
- Ancient DNA and morphometric analysis reveal extinction and replacement of New Zealand’s unique black swans4
- Remains of rare and extinct birds from Illinois Indian sites4
- Polar bear fossil and archaeological records from the Pleistocene and Holocene in relation to sea ice extent and open water polynyas2
- The fossil bird associations from the early Middle Pleistocene of the Ragusa province (SE Sicily, Italy)2
- Declining foraging returns from an inexhaustible resource? Abundance indices and beluga whaling in the western Canadian Arctic2
- Birds in Finnish prehistory2
- Birds of the Cromer Forest Bed series of the East Anglian Pleistocene2
- The fossil avifauna of Itchtucknee River, Florida2
- A review of the Pleistocene birds of Fossil Lake, Oregon2
- The fossil Birds of California2
- On gigantic land-tortoises and a small freshwater species from the ossiferous caverns of Malta, together with a list of their fossil fauna; and a note on chelonian remains from the rock-cavities of Gibraltar2
Each of the 72 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. 41 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 content2
Picture of Cygnus
- Source
- Wikipedia/Commons
- Credit
- Geni
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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, “Swan”
- 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 itCygninae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Garsault 1764