Crocodylus siamensis
The Siamese crocodile is a medium-sized freshwater crocodile native to Thailand, Laos, Cambodia, Vietnam and Kalimantan in Indonesia. It is critically endangered.

Rigelus · CC BY-SA 3.0 · 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
- Siamese crocodilePBDB
- Sits inside
- CrocodylusPBDB
- Diet
- carnivorePBDB, for Crocodylia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Mesoeucrocodylia
Time the record covers
At most 2.5 million years on record.
Every occurrence read is dated to somewhere between 2.58 Mya and 129 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.
14 occurrences of Crocodylus siamensis on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
14 occurrences- Pleistocene100%
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.
Crocodylus siamensis and its relatives
PleistoceneWhere Crocodylus siamensis and its relatives were recorded in the Pleistocene.
Found in the same rock
57 taxa- Gavialis bengawanicus6 sites
- Rhinoceros sondaicus3 sites
- Batagur affinis2 sites
- Bos (Bibos)2 sites
- Bubalus palaeokerabau2 sites
- Cervus lydekkeri2 sites
- Duboisia santeng2 sites
- Homo erectus2 sites
- Muntiacus muntjak2 sites
- Panthera tigris2 sites
- Stegodon trigonocephalus2 sites
- Amyda1 site
- Amyda cartilaginea1 site
- Axis axis1 site
- Batagur trivittata1 site
- Bos gaurus1 site
- Bos sauveli1 site
- Bubalus1 site
- Capricornis sumatraensis1 site
- Cervus unicolor1 site
- Chitra1 site
- Chitra chitra1 site
- Crocuta crocuta1 site
- Cuon1 site
The Paleobiology Database records 14 sites for Crocodylus siamensis, 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
3 references- A revision of the Dubois crocodylians, Gavialis bengawanicus and Crocodylus ossifragus, from the Pleistocene Homo erectus beds of Java12
- Freshwater crocodile, Crocodylus siamensis Schneider, 1801, from the Middle Pleistocene deposits in Chaloem Phrakiat District, Nakhon Ratchasima, Thailand1
- The Middle Pleistocene vertebrate fauna from Khok Sung (Nakhon Ratchasima, Thailand): biochronological and paleobiogeographical implications1
Each of the 14 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 Crocodylus siamensis
- Source
- Wikipedia/Commons
- Credit
- Rigelus
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Crocodylus siamensis 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 itCrocodylus through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Schneider 1801