Table 2. Largest Phanerozoic members of major clades not already listed in Table 1.

Category		Clade	Age	Size
Terrestrial	Birgus latro	Crustacea	Recent	300 mm[164]
	Pebasiconcha immanis	Gastropoda	Middle Miocene	256 mm[165]
	Eryops macrocephalus	Amphibia (aquatic)	Early Permian	2 m[166]
	Megalania prisca	Squamata	Pleistocene	2000 kg[167]
	Geochelone sp.	Chelonia	Recent	1000 kg[97]
	Argentavis magnificens	Aves (flying)	Late Miocene	70 kg[168]
	Aepyornis maximus	Aves (non-flying)	Holocene	275 kg[169]
Marine	Isotelus rex	Trilobita	Late Ordovician	700 mm[164]
	Jaekelopterus rhenaniae	Chelicerata (and Arthropoda)	Late Oligocene	2.5 m[170,171]
	Jasus edwardsii	Crustacea	Recent	60 cm[172]
	Odontodactylus scyllarus	Crustacea	Recent	60 cm[164]
	Campanile parisiensis	Gastropoda	Middle Eocene	1 m[8]
	Cryptochiton stelleri	Polyplacophora	Recent	350 mm[3]
	Dunkleosteus terrelli	Placodermi	Late Devonian	7 m[173]
	Carcharocles megalodon	Chondrichthyes	Middle Miocene-Late Pliocene	18m[135]
	Rhincodon typus	Chondrichthyes	Recent	18 m[174]
	Archelon sp.	Chelonia	Maastrichtian	4 m[175]