Enigmatic animal
Tullimonstrum
Tullimonstrum gregarium had a soft body, stalked eyes and a long front appendage.
Tullimonstrum gregarium had a soft body, stalked eyes and a long front appendage. The Tully monster combines features that have made it one of the most debated fossil animals.
Three stages. One companion.
Game artwork


AI-generated, stylized game illustrations. These designs and growth stages are imaginative, not scientific reconstructions.
Tullimonstrum at a glance
- Diet
- Diet uncertain
- When it lived
- Carboniferous
- Group
- Animalia
- Enigmatic fossil animals
Beyond the game
The real Tullimonstrum
Tullimonstrum gregarium had a soft body, stalked eyes and a long front appendage. The Tully monster combines features that have made it one of the most debated fossil animals.
Its relationship to vertebrates and other animal groups remains contested. The distinctive body outline is clearer than its exact position in the evolutionary tree.
Fossil discoveries
Selected fossil records · present-day map
Map references
Map: Natural Earth, public domain. Fossil records: Paleobiology Database and linked collections and publications.Sources & text credits
Explore the references behind this profile.
Original English Dinosgacha educational summaries informed by the linked scientific and museum references; source publications retain their own rights.