Omnisaura
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Footprint type

Caririchnium

Leonardi 1984

Caririchnium is a footprint type: the name is for the fossil footprints themselves. The animal that made them is not known for certain. Its footprints are found in rocks 143.1–93.9 million years old in 7 countries, most often the United States and Spain.

Confidence labels
How sure are we?0 high22 medium16 lowHow we rate confidence

Confidence labels are switched off. Facts with low confidence, or where sources disagree, still carry a small dot: tap it for the reason.

At a glance

Data as of 12 October 2026
143.1–93.9 Ma
Triassic
Jurassic
Cretaceous
252 million years ago20114366

The last non-bird dinosaurs died out 66 million years ago. That's as far from us as the end of this bar.

Named by
Leonardi 1984
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Described in
G. Leonardi (1984). Le impronte fossili di Dinosauri [The fossil footprints of dinosaurs]. Sulle Orme dei Dinosauri: 164–186.
mediummedium: Only PBDB gives this; its author and year match the naming authority (Leonardi 1984).
Sources

Given by: Paleobiology Database. The publication the Paleobiology Database gives as the authority for this genus name, usually the one that first named and described it.

Dated to
Cenomanian, 100.5–93.9 million years ago
mediummedium: Only PBDB gives this; nothing contradicts it.
Omnisaura calculation143.1–93.9 million years ago, from its dated fossil records
mediummedium: Omnisaura's calculation from 75 confirmed PBDB records.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Found in
Brazil
mediummedium: Only PBDB records it (3 records).
China
mediummedium: Only PBDB records it (11 records).
Mexico
mediummedium: Only PBDB records it (3 records).
Portugal
mediummedium: Only PBDB records it (2 records).
Spain
mediummedium: Only PBDB records it (11 records).
United States
mediummedium: Only PBDB records it (33 records).
Japan
lowlow: Only one PBDB record.
mixedmixed: Levels differ between entries; each has its own.
Sources

Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).

Rock formations
25, including Mojado, Pajarito, Jiaguan and Jindong
mixedmixed: Levels differ between entries; each has its own.
Show all 25, each with its confidence
Antenor Navarro
mediummedium: Only PBDB records it (2 records).
Areia do Mastro
mediummedium: Only PBDB records it (2 records).
Camarillas
mediummedium: Only PBDB records it (2 records).
El Castellar
mediummedium: Only PBDB records it (2 records).
Jiaguan
mediummedium: Only PBDB records it (7 records).
Jindong
mediummedium: Only PBDB records it (9 records).
Mojado
mediummedium: Only PBDB records it (9 records).
Muddy Sandstone
mediummedium: Only PBDB records it (3 records).
Pajarito
mediummedium: Only PBDB records it (10 records).
Plainview
mediummedium: Only PBDB records it (2 records).
Akaiwa
lowlow: Only one PBDB record.
Fruitland
lowlow: Only one PBDB record.
Haman
lowlow: Only one PBDB record.
Huérteles
lowlow: Only one PBDB record.
Lewisville
lowlow: Only one PBDB record.
Mesa Rica Sandstone
lowlow: Only one PBDB record.
Mirambel
lowlow: Only one PBDB record.
Parajito
lowlow: Only one PBDB record.
Saniri
lowlow: Only one PBDB record.
Schrattenkalk
lowlow: Only one PBDB record.
Sousa
lowlow: Only one PBDB record.
Tianjialou
lowlow: Only one PBDB record.
Tongfosi
lowlow: Only one PBDB record.
Villar Navalsaz
lowlow: Only one PBDB record.
Xiguayuan
lowlow: Only one PBDB record.
Sources

Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.

Footprint family
Iguanodontipodidae
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Parent group
Iguanodontipodidae
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Known from
Footprints and traces
Sources

Given by: Paleobiology Database (what the name was based on).

Made by
Not known for certain. Footprints rarely show which animal made them.
Sources: Paleobiology Database (CC BY 4.0), Wikidata (CC0 1.0)Confidence levels and gaps are Omnisaura's own assessment.

Gaps are answers

What isn't known yet

  • The animal that made them: not known for certain, as for most footprint types.
  • Type species: no source we use gives it yet.
  • Order: no source we use gives it yet.
  • Common names: no source we use gives it yet.
  • What it was named after: no source we use gives it yet.
  • Held back: 5 fossil records left out: identified only tentatively (for example "cf." or "?").
  • Resting on one source: 4 facts come from a single source with nothing against them (rated medium): authority (PBDB); parent group (PBDB); family (PBDB); age (headline) (PBDB).

Size, diet and behaviour aren't covered yet. Omnisaura leaves them out rather than guess.

Where sources disagree

None open. Where our sources overlap, they agree on everything shown here.

Did it meet…?

?

No. Caririchnium had gone at least 10.3 million years before Tyrannosaurus appears in the fossil record.

Going by the ages and rock formations of their dated fossils, as on the map. Compare their fossil sites on the map.

Found in the same rocks

Genera and other fossil types from the same formations, from rocks of the same age.

HadrosauropodusMagnoavipesBrontopodusEubrontesIguanodonGrallatorIguanodontipusMinisauripusProtohadrosAmblydactylusDeltapodusKalohipusMoraesichniumVelociraptorichnusAmpelognathusByakudansauropusand 10 more

Same family

Other genera in Iguanodontipodidae with a full profile.

AmblydactylusHadrosauropodusIguanodontipus

Credits

Where this page comes from

  • Paleobiology DatabaseCC BY 4.0 · fossil records, ages, classification
  • WikidataCC0 1.0 · names and identifiers
  • OmnisauraOmnisaura editorial · confidence levels and gaps
  • PaleoMAP PaleoCoastlines (Kocsis and Scotese 2021)CC BY 4.0 · ancient coastlines on the small map
  • Natural EarthPublic domain · today's coastlines