swap_horiz Cotylorhynchus romeri Alternatives
Looking for alternatives to Cotylorhynchus romeri? Compare the top Fossil options ranked by our AI scoring system.
Cotylorhynchus romeri
Cotylorhynchus romeri is a large herbivorous synapsid from the Early to Middle Permian of Oklahoma and Texas, described by paleontologist Everett C. Olson in 1955. As the largest known member of Caseidae, it reached approximately 6 meters in length and weighed an estimated 2 tons, with a disproporti...
apps Top Cotylorhynchus romeri Alternatives
The top alternative to Cotylorhynchus romeri in 2026 is Smilodon fatalis with a score of 9.1/10, followed by Deinonychus antirrhopus (YPM 5205) (9.1) and Triceratops horridus (USNM 1201) (9.0).
Smilodon fatalis
Smilodon fatalis, a saber-toothed cat of the Pleistocene, is known from thousands of specimens recovered at the La Brea...
Deinonychus antirrhopus (YPM 5205)
Deinonychus antirrhopus was a dromaeosaurid theropod dinosaur from the Early Cretaceous of western North America. Yale s...
Triceratops horridus (USNM 1201)
Triceratops horridus was a large herbivorous ceratopsid dinosaur from the latest Cretaceous of western North America. It...
Stegosaurus ungulatus (USNM 4936)
Stegosaurus ungulatus (USNM 4936) is a large stegosaurid from the Late Jurassic Morrison Formation of North America, wit...
Allosaurus fragilis (USNM 4734)
Allosaurus fragilis is a large theropod dinosaur from the Late Jurassic Morrison Formation of western North America. Oth...
Parasaurolophus walkeri
Parasaurolophus walkeri is a species of large herbivorous hadrosaurid dinosaur from the Late Cretaceous of western North...
Dimetrodon grandis
Dimetrodon grandis is an extinct synapsid from the Early Permian of North America. It was a large terrestrial predator w...
Pteranodon longiceps
Pteranodon longiceps is a large toothless pterosaur from the Late Cretaceous of central North America, especially deposi...
Ankylosaurus magniventris
Ankylosaurus magniventris was a large armored dinosaur from the latest Cretaceous of western North America. It had a bro...
Dire Wolf (Aenocyon dirus)
Aenocyon dirus, the dire wolf, is known from thousands of Pleistocene specimens including large numbers from the La Brea...
Basilosaurus cetoides
Basilosaurus cetoides was a fully aquatic early whale that lived during the late Eocene and is known from fossils in Nor...
Ichthyornis dispar
Ichthyornis dispar, a toothed Cretaceous seabird from Kansas described by Marsh in 1872, was among the earliest Mesozoic...
Diplocaulus magnicornis
Diplocaulus magnicornis is an extinct lepospondyl tetrapod from the Permian of North America, especially well represente...
Inostrancevia alexandri
Inostrancevia alexandri is a large gorgonopsian therapsid from the Late Permian of European Russia. It was a predatory n...
Edaphosaurus pogonias
Edaphosaurus pogonias was a large plant-eating synapsid from the Early Permian of North America. It had a relatively sma...
Eryops megacephalus
Eryops megacephalus was a large temnospondyl tetrapod that lived in North America during the Early Permian. Adults could...
Moschops capensis
Moschops capensis is a large, heavily built herbivorous therapsid from the middle Permian rocks of South Africa's Karoo...
Lycaenops ornatus
Lycaenops ornatus is an extinct gorgonopsian therapsid known from Late Permian rocks of South Africa's Karoo Basin. Like...
Estemmenosuchus mirabilis
Estemmenosuchus mirabilis is a large dinocephalian therapsid from the Middle Permian of what is now Russia. It is recogn...
Ophiacodon mirus
Ophiacodon mirus is an early synapsid from the Early Permian of North America and a species of the genus Ophiacodon. It...
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