Spinosauridae

1. Suchomimus 2. Cristatusaurus 3. Oxalaia 4. Baryonyx 5. Spinosaurus

Theropods (Theropoda)
Who is  the ‘biggest’ theropod?
Size comparison of selected giant theropod dinosaurs

Deinocheiridae

1. Ornithomimus 2. Struthiomimus 3. Deinocheirus 4. Gallimimus 5. Anserimimus

Velociraptor
The terrible predator of Hollywood movies was not more dangerous to humans than the turkey we eat at Christmas

Caenagnathoids (Caenagnathiformes)
Oviraptorosauria is a clade of Cretaceous theropod dinosaurs of uncertain affinities within Maniraptoriformes.The results of a phylogenetic analysis using 195 characters scored for four outgroup an...

Penguins (Sphenisciformes)

1. Palaeeudyptes 2. Pachydyptes 3. Platydyptes 4. Anthropornis 5. Waimanu

Gargantuavis

Gargantuavis is a genus of extinct avialan stem-birds containing the single species Gargantuavis philoinos. G. philoinos lived during the late Cretaceous period in what is now southern France. Its fossils were discovered in...

Owls (Strigiformes)
The largest owl of all time was the Cuban Ornimegalonyx at 43.3 inches tall probably exceeding 9 kg (20 lb).

Storks and allies (Ciconiiformes)

The largest of Ciconiiformes was Leptoptilos robustus, standing 1.8 metres (5.9 ft) tall and weighing an estimated 16 kilograms (35 lb).

Titanis, which is about 2.5m. tall, as tall as a forest elephant.
It lived approximately 5-2 million years ago (early Pliocene to early Pleistocene) in North America. Fossil evidence has been found in Gilchrist County, Florida dating from...

Phorusrhacidae (terror birds) 
1. Gastornis parisiensis 2. Phorusrhacos longissimus 3. Dromornis autralis 4. Kelenken guillermoi
Phorusrhacids, colloquially known as terror birds, are an extinct clade of large carnivorous flightless bird...

Teratornithidae

Teratorns are an extinct group of giant predatory birds that are classified in the bird family Teratornithidae.The name “teratorn” means “Wonder Bird,” a name given because of the size, uniquene...