1: Purrusaurus ( largest species).
2: Sarchosuchus ( heard it got significantly downsized, though not sure seems the new reconstruction was criticized by many people).
3: Gryposuchus.
4: Ramphosuchus .
5: Deinosuchus ( largest species).
6: And Astorgosuchus.
Estimates are all over the place.
It does not help that various fanboys vastly upscale their particular favourites either.
My opinion?
9-12 metres for any of them and 4-8 metric tons.
43 bananas..
Purussaurus brasilensis was up to perhaps 10.5 m (34.6 feet) in length and weighed up to give or take 6 tons. They still seem to at least rival the size and weight of the largest * Deinosuchus* supported by known evidence I believe.
Sarcosuchus imperator was as far as I known downsized to a length of up to roughly 9.2-9.5 m (30.3-31.3 feet) and a weight of perhaps 3 tons or more.
Gryposuchus was maybe to 10.15 m (33.3 feet).
4 Rhamposuchus has crazy variable size estimates from what I’ve seen even for a giant extinct crocodylomorph always with the very partial remains, varying from 6 to 18 m! I don’t know what the definitive consensus is, perhaps up to either 8 m (26.4 feet) or 11 m (36.3 feet).
Deinosuchus species, possibly two of which were similarly sized as the largest. I don’t know if everyone accepts it but they are perhaps to 10.6-10.7 m (to 35.3 feet) and even to roughly 7 tons even though there are claims of larger specimens.
For Astorgosuchus to 7-8 m (23.1-26.4 feet) in length seems pretty widely accepted.
It is possible Deinsuchus, Purussaurus and Rhamposuchus all might have arguably reached around 11 m in length but refined estimates seem to all but rule out 12 m of more sizes for any crocodylomorph.
How is 10.5 meter Purrusaurus is around 6 ton but then 10.6-10.7meter deinosuchus ends up being 7 ton even if Purrusaurus is pound for pound significantly more thicker wider than Deinosuchus even after Deinosuchus recently got its body shrank down. How does that make sense. I sense there is still some major bias in these recent estimations. Purrusaurs is not as long as deinosuchus but its 100% defnetly much heavier than deinosuchus pound for pound if they were near similar length.
I think in terms of weight when their length are in similar range. Purrusaurus should be at the very least should always have the upper hand.
Rhamposuchus was 11 thousand miles long and weighed 23 trillion tons.
Purussaurus brasiliensis Mass: ~3.9–6.2 t (upper conservative range; older estimates up to ~8 t considered inflated) Length: ~7.6–10.0 m Reference: Paiva et al., 2022, Journal of South American Earth Sciences
Deinosuchus (D. riograndensis / D. schwimmeri) Mass: ~2.5–5.0 t (largest individuals; recent revisions trend lower) Length: ~7.5–8.5 m Reference: Cossette & Brochu, 2020; Walter et al., 2025 revisionary work
Sarcosuchus imperator Mass: ~3.5–4.3 t Length: ~9.0–9.5 m Reference: O’Brien et al., 2019, Integrative Organismal Biology
Gryposuchus croizati Mass: ~1.6–1.8 t Length: ~9.7–10.2 m Reference: Riff & Aguilera, 2008, Journal of Vertebrate Paleontology
Rhamphosuchus Mass: not directly estimated; inferred ~1–3 t based on gavialoid scaling Length: ~8–11 m Reference: Head, 2001; subsequent gavialoid reassessments
Astorgosuchus bugtiensis Mass: not directly estimated; inferred <2 t Length: ~6.4–7.5 m Reference: Lydekker; later crocodyloid regression summaries
Notes off of rigorous reconstructions - Purussaurus is likely about 10.5m and 6.5 tons for the largest specimens, pretty close to predicted range - Deinosuchus hits UP to 9.7m and 5.4 tons with the most generous scaling but this is noted as probably too large - Sarco is looking to be closer to 3100kg when reconstructed off Terminonaris - Ramphosuchus really is super understudied. Some preliminary work on a skeletal reconstruction is looking around 8 - 9m and 3-ish tons - Grypo has nothing. Its weird.
So, pretty big.
Sarco and deinosuchus are around the 2.5 to 4.5 ton range with more modern estimates with maybe specially large specimens wiggling past 5.
Purussaurus is around the weight of a bull elephant at 5+ tons.
Rhampo is around 1-2 tons
Astoro has no official estimates but basing of modern animals probably give or take a ton.
Note these are very susceptible to change with time especially purussaurus, deinosuchus and sarcosuchus.
But yeah the 10-12 ton behemoths that alot of media glazes them to be is unlikely as far as modern studies go.
South America was such a land of crocodiles!
Barinasuchus was the largest land predator since the non-avian dinosaurs.
Crocodilians rule! 🐊
David Schwimmer has just created the most accurate skeleton of the animal named in his honour.
Deinosuchus shwimmeri.
It measures 9.5 metres (31 ft) in length.
The story is on Phys.org.
So feked off.
I have tried to post many new topics and pics on here but it NEVER works for me.
If someone could give me step by step instructions I would be very grateful.
I must be doing something wrong.
For sure
😳😍