top of page
< Back
camelmoreli.png

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

Ethnography List

Historical Entries

  • Facebook
  • Twitter
  • Instagram
  • Reddit's r/Ketoscience
bottom of page