Omnisaura

Dinosaur genus

Chadititan

Agnolin et al. 2025

Chadititan is a dinosaur genus known from bones, found in rocks 83.6–72.2 million years old, in Argentina.

Confidence labels
How sure are we?0 high6 medium4 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 11 October 2026
83.6–72.2 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
Agnolin et al. 2025
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

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

Described in
F. Agnolin, M. Motta, J. García Marsá, M. Aranciaga Rolando, G. Alvarez Herrera, N. Chimento, S. Rozadilla, F. Brizzon-Egli, M. Cerroni, K. Panzeri, S. Bogan, S. Casadio, J. Sterli, S. Miquel, S. Martínez, L. Perez, D. Pol, F. Novas (2025). New fossiliferous locality from the Anacleto Formation (Late Cretaceous, Campanian) from northern Patagonia, with the description of a new titanosaur. Revista del Museo Argentino de Ciencias Naturales 26(2): 217–259.
mediummedium: Only PBDB gives this; its author and year match the naming authority (Agnolin et al. 2025).
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.

Type species
Chadititan calvoi
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

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

Lived
Campanian, 83.6–72.2 million years ago
mediummedium: Only PBDB gives this; nothing contradicts it.
Omnisaura calculation83.6–72.2 million years ago, from its dated fossil records
lowlow: Omnisaura's calculation from only 1 dated record(s).
Sources

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

Fossils found in
Argentina
lowlow: Only one PBDB record.
Sources

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

Rock formations
Anacleto
lowlow: Only one PBDB record.
Sources

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

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

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

Species named in its records
Chadititan calvoi
Sources

Given by: Paleobiology Database (the species its fossil records are identified as).

Diet
herbivore (inferred for its group)
mediummedium: Only PBDB gives this, and it infers it for the whole of Sauropoda, the group this genus belongs to, not from this genus's own fossils.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB, inferred from a group the genus belongs to.

Way of life
ground dwelling, gregarious (inferred for its group)
lowlow: PBDB infers this way of life for the whole of Sauropoda; behaviour is rarely known for one genus.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB, inferred from a group the genus belongs to.

Known from
Bones
Sources

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

Sources: Paleobiology Database (CC BY 4.0)Confidence levels and gaps are Omnisaura's own assessment.

Gaps are answers

What isn't known yet

  • Order: no source we use gives it yet.
  • Family: 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.
  • Resting on one source: 6 facts come from a single source with nothing against them (rated medium): name (PBDB); authority (PBDB); type species (PBDB); parent group (PBDB); age (headline) (PBDB); diet (PBDB).

Size and appearance aren't covered yet, and diet and way of life only as PBDB infers them for the wider group. Omnisaura leaves the rest out rather than guess.

Where sources disagree

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

Did it meet…?

?

Same time, different places. Their fossils overlap in age, 83.6 to 72.2 million years ago, but no rock formation holds both.

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

Connections

Genera linked to Chadititan by where and when their fossils were found, by classification and by who named them. Select a name to open its page.

ChadititanSame rocks, same timeSame parent groupSame naming authorAlso found in ArgentinaMegaloolithusNeuquensaurusGasparinisauraAerosteonand 4 moreArrudatitanBrasilotitanBravasaurusMaxakalisaurusArriagadoolithusBonapartenykusChucarosaurusAeolosaurusTalenkauenAntarctosaurusArgyrosaurusand 13 more

Same rocks, same time 8

Genera found in the same rock units, from rocks of overlapping age, the most shared fossil sites first.

MegaloolithusNeuquensaurusGasparinisauraAerosteonAntarctosaurusAucasaurusBarrosasaurusTeratopodus

Same parent group: Rinconsauria 4

Other genera in Rinconsauria with a full profile.

ArrudatitanBrasilotitanBravasaurusMaxakalisaurus

Named by Agnolin 3

Genera whose naming authority includes the same surname. The authority has no initials, so different people who share a surname can appear together.

ArriagadoolithusBonapartenykusChucarosaurus

Found in Argentina 17

Other genera found in Argentina, from rocks of overlapping age, the most fossil sites there first.

MegaloolithusNeuquensaurusAeolosaurusGasparinisauraTalenkauenAerosteonAntarctosaurusArgyrosaurusAucasaurusAustrocheirusBarrosasaurusBravasaurusDreadnoughtusLewisuchusOrkoraptorSektensaurusand 1 more

Credits

Where this page comes from

  • Paleobiology DatabaseCC BY 4.0 · fossil records, ages, classification
  • 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