Madtsoia
Ghedoghedo · Public Domain · via Wikidata/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
- MadtsoiidaePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Amniota
Time the record covers
At least 54 million years on record.
The record covers at least 83.6 Mya to 29 Mya. No occurrence read is dated outside 89.8 Mya to 21 Mya.
24 occurrences of Madtsoia on record, most of them in the Late Cretaceous. 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
24 occurrences- Late Cretaceous71%
- Paleocene5%
- Eocene20%
- Oligocene3%
- Miocene1%
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
5 formations
- Maevarano Formation14
- Sarmiento Formation3
- Lameta Formation2
- Inbeceten Formation · Damergou Group1
- Las Flores Formation · Río Chico Group1
Loading coastlines…
The named rock units Madtsoia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Madtsoia and its relatives
Late CretaceousWhere Madtsoia and its relatives were recorded in the Late Cretaceous.
Found in the same rock
291 taxa- Majungasaurus crenatissimus6 sites
- Masiakasaurus knopfleri5 sites
- Simosuchus clarki5 sites
- Beelzebufo ampinga4 sites
- Mammalia3 sites
- Marsupialia3 sites
- Osteichthyes3 sites
- Pelomedusidae3 sites
- Anura2 sites
- Crocodyliformes2 sites
- Henricosbornia lophodonta2 sites
- Lacertilia2 sites
- Noasauridae2 sites
- Ornithothoraces2 sites
- Serpentes2 sites
- Titanosauridae2 sites
- Trigonostylopidae2 sites
- Acarechimys leucotheae1 site
- Acdestodon bonapartei1 site
- Acdestoides praecursor1 site
- Acoelodus proclivus1 site
- Acoelohyrax complicatissimus1 site
- Alamitophis tingamarra1 site
- Albertogaudrya unica1 site
The Paleobiology Database records 24 sites for Madtsoia, 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
12 references- A Late Cretaceous (Maastrichtian) snake assemblage from the Maevarano Formation, Mahajanga Basin, Madagascar10
- Noveaux restes d’un serpent Boidé (Madtsoia madagascariensis nov. sp.) dans le Crétacé Supérieur de Madagascar3
- Snakes from the Paleocene and Eocene of Patagonia (Argentina): paleoecology and coevolution with mammals2
- Faunal elements from the Deccan volcano-sedimentary sequences of India: a reappraisal of biostratigraphic, palaeoecologic, and palaeobiogeographic aspects1
- First record of squamate reptiles from the Oligocene of South America1
- A new species of the snake Madtsoia from the Upper Cretaceous of India and its paleobiogeographic implications1
- Australia's oldest known snakes: Patagoniophis, Alamitophis, and Cf. Madtsoia (Squamata: Madtsoiidae) from the Eocene of Queensland.1
- Fossil snakes from the Palaeocene of São José de Itaboraí, Brazil. Part I. Madtsoiidae, Aniliidae1
- Les continents péri-atlantiques au Crétacé Supérieur: migrations des faunes continentales et problèmes paléogéographiques [The peri-Atlantic continents of the Upper Cretaceous: migrations of continental faunas and paleogeographic problems]1
- Nouvelles récoltes de vertébrés dans le terraines continentaux du Crétacé supérieur de la région de Majunga (Madagascar) [New collections of vertebrates in the Upper Cretaceous continental terrains of the Majunga region (Madagascar)]1
- Un dentaire de Madtsoia (serpent géant du Paléocène de Patagonie)1
- A new fossil snake from the Notostylops beds of Patagonia1
Each of the 24 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. 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 content1
Picture of Madtsoia
- Source
- Wikidata/Commons
- Credit
- Ghedoghedo
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Madtsoia 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMadtsoiidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Simpson 1933