

Gorgon Eyed Hippopotamus
Hippopotamus gorgops
📈🦛
Chordata
Mammalia
Artiodactyla
Hippopotamidae
Hippopotamus
Hippopotamus gorgops
The “Gorgon-eyed River Horse,” Hippopotamus gorgops, was a colossal hippo whose elevated eye orbits allowed it to peer above water while nearly submerged.
Description
Hippopotamus gorgops was a colossal semi-aquatic mammal that lived across Africa and parts of the Middle East during the Late Pliocene and Early to Middle Pleistocene epochs. Reaching lengths of up to 4.3 meters and standing over 2 meters at the shoulder, it weighed approximately 3.9 metric tons. Its skull was distinct, featuring prominently elevated eye sockets and nasal openings—an adaptation for keeping watch while the rest of the body remained underwater.
This species inhabited lakes, floodplains, and slow-moving rivers, grazing on C₄ grasses and aquatic vegetation. Like its modern relative (Hippopotamus amphibius), it likely lived in herds and spent much of the day submerged to stay cool. H. gorgops eventually disappeared by the mid-Pleistocene, likely due to climate shifts and habitat contraction, coinciding with increased human activity along waterways.
Quick Facts
Max Mass
Shoulder Height
Standing Height
Length
Diet
Trophic Level
4000
1.6
2.4
4.2
kg
m
m
m
Mixed Feeder
Herbivores – Grazers
Hunt History
Early human ancestors—likely Homo erectus and Homo ergaster—interacted with Hippopotamus gorgops along African rivers. While these massive animals were dangerous to hunt, evidence suggests both opportunistic scavenging and organized butchery occurred. Humans used stone tools to remove flesh and marrow from carcasses, possibly when hippos were trapped in drying riverbeds or killed in ambushes at water sources.
Archaeological Evidence of Predation
El Kherba, Algeria (~1.8 million years ago)
Fossil remains of H. gorgops at this Early Pleistocene site bear clear stone-tool cut marks—the earliest evidence of human butchery of large aquatic mammals in North Africa. The presence of Oldowan tools suggests Homo habilis or Homo ergaster butchered carcasses, likely scavenging hippos that died naturally or became stuck in mudflats.
Kilombe, Kenya (~1.76 million years ago)
At this Rift Valley site, fossil hippo bones show flaked stone tool marks consistent with dismemberment and marrow extraction. Acheulean handaxes found nearby imply planned butchery rather than random scavenging. The hunters were likely early Homo erectus, who used fire-hardened spears and coordinated drives to exploit trapped or weakened animals.
Buia, Eritrea (~1.0 million years ago)
Large hippo remains from Buia exhibit impact fractures and percussion marks—clear signs of bone-breaking for marrow extraction. Associated Acheulean tools and human fossils indicate an organized subsistence strategy in which early humans targeted large semi-aquatic herbivores along lake margins.
Time & Range
Extinction Status
Globally Extinct
Extinction Date
Temporal Range
Region
1780000
BP
Middle Pleistocene
Africa
Wiki Link
Fat Analysis
Fatness Profile:
High
Fat %
15
Est. Renderable Fat
600
kg
Targeted Organs
Subcutaneous belly/flank fat
Adipose Depots
Thick subcutaneous (belly/flank), visceral; marrow
Preferred Cuts
Back/flank subcutaneous fat
Hunt Difficulty (x/5)
5





