Geosaurini

Mark T. Young, Stephen L. Brusatte, Marco Brandalise de Andrade, Julia B. Desojo, Brian L. Beatty, Lorna Steel, Marta… · CC BY 2.5 · 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
- GeosaurinaePBDB
- Diet
- carnivorePBDB, for Thalattosuchia
- Life habit
- nektonicPBDB, for Thalattosuchia
- Motility
- actively mobilePBDB, for Thalattosuchia
- Environment
- marinePBDB, for Thalattosuchia
Time the record covers
At least 41 million years on record.
The record covers at least 161.5 Mya to 119.57 Mya. No occurrence read is dated outside 165.3 Mya to 113.2 Mya.
66 occurrences of Geosaurini on record, most of them in the Late Jurassic. 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
66 occurrencesThese 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
23 formations
- Kimmeridge Clay Formation · Dorset Succession Group10
- Vaca Muerta Formation10
- Oxford Clay Formation · Ancholme Group4
- Mergelstetten Formation · Weißjura Group3
- Solnhofen Formation3
- Mörnsheim Formation · Weißjura Group3
Loading coastlines…
The named rock units Geosaurini has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.
Geosaurini and its relatives
Late JurassicWhere Geosaurini and its relatives were recorded in the Late Jurassic.
Found in the same rock
293 taxa- Dakosaurus maximus15 sites
- Dakosaurus12 sites
- Geosaurus9 sites
- Dakosaurus andiniensis6 sites
- Cricosaurus4 sites
- Ichthyosauria4 sites
- Metriorhynchinae4 sites
- Pliosauridae4 sites
- Pliosaurus4 sites
- Brachyphyllum3 sites
- Cycadopteris3 sites
- Geosaurus giganteus3 sites
- Geosaurus lapparenti3 sites
- Ichthyosaurus3 sites
- Neusticemys neuquina3 sites
- Ophthalmosaurus3 sites
- Plesiosauria3 sites
- Sauropoda3 sites
- Thalassophonea3 sites
- Ammonoidea2 sites
- Araucarites2 sites
- Athrotaxites lycopodioides2 sites
- Brachiopoda2 sites
- Caturus furcatus2 sites
The Paleobiology Database records 56 sites for Geosaurini, 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
34 references- The cranial osteology and feeding ecology of the metriorhynchid crocodylomorph genera Dakosaurus and Plesiosuchus from the Late Jurassic of Europe10
- The evolution of extreme hypercarnivory in Metriorhynchidae (Mesoeucrocodylia: Thalattosuchia) based on evidence from microscopic denticle morphology6
- A new species of Cricosaurus (Thalattosuchia: Crocodylomorpha) from southern Germany: the first three-dimensionally preserved Cricosaurus skull from the Solnhofen Archipelago4
- Re-description of a putative Early Cretaceous "teleosaurid" from France, with implications for the survival of metriorhynchids and teleosaurids across the Jurassic-Cretaceous Boundary4
- Jurassic marine reptiles of the Neuquen Basin: records, faunas, and their palaeobiogeographic significance4
- An unusual marine crocodyliform from the Jurassic-Cretaceous boundary of Patagonia3
- Metriorhynchid crocodylomorphs from the lower Kimmeridgian of Southern Germany: evidence for a new large-bodied geosaurin lineage in Europe2
- The mystery of Mystriosaurus: Redescribing the poorly known Early Jurassic teleosauroid thalattosuchians Mystriosaurus laurillardi and Steneosaurus brevior2
- Largest known specimen of the genus Dakosaurus (Metriorhynchidae: Geosaurini) from the Kimmeridge Clay Formation (Late Jurassic) of England, and an overview of Dakosaurus specimens discovered from this formation (including reworked specimens from the Woburn Sands Formation)2
- What is Geosaurus? Redescription of Geosaurus giganteus (Thalattosuchia: Metriorhynchidae) from the Upper Jurassic of Bayern, Germany2
- Metriorhynchid crcodiles (Crocodyliformes) from the Oxfordian of Western Cuba2
- Solnhofen tetrapod taphonomy2
Each of the 66 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. 22 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 content1

Picture of Geosaurini
- Source
- Wikidata/Commons
- Credit
- Mark T. Young, Stephen L. Brusatte, Marco Brandalise de Andrade, Julia B. Desojo, Brian L. Beatty, Lorna Steel, Marta…
- Licence
- CC BY 2.5
- Commercial use
- the licence allows it
No 3D scan of Geosaurini 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 itGeosaurinae through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cau and Fanti 2011