Anhima cornuta

The horned screamer is a species of waterfowl that belongs to a relatively small family, the Anhimidae, which occurs in wetlands of tropical South America. There are three screamer species, the other two being the southern screamer and the northern screamer in the genus Chauna. They are related to ducks, geese and swans, which are in the family Anatidae, but have bills looking more like those of Galliformes.

Anhima cornuta

Bill Bouton from San Luis Obispo, CA, USA · CC BY-SA 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
Horned screamerPBDB
Sits inside
AnhimaPBDB
Diet
herbivorePBDB, for Anhimidae
Life habit
volantPBDB, for Anhimidae
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

Time the record covers

At most 12 thousand years on record.

Every occurrence read is dated to somewhere between 11.7 ka and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pleistocene — about 0 of 2 occurrencesHolocene — about 2 of 2 occurrences17 ka–0 Mya — about 2 occurrences512 ka0 Mya

2 occurrences of Anhima cornuta on record, most of them in the Holocene. 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

2 occurrences

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.

Anhima cornuta and its relatives

Holocene

Where Anhima cornuta and its relatives were recorded in the Holocene.

Found in the same rock

8 taxa

The Paleobiology Database records 2 sites for Anhima cornuta, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Anhima cornuta

Credit
Bill Bouton from San Luis Obispo, CA, USA
Licence
CC BY-SA 2.0
Commercial use
the licence allows it

No 3D scan of Anhima cornuta 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

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 itAnhima through timeFormations of the HoloceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1766