Irritator

Size
| Size | Medium |
|---|---|
| Height (m) | 2.1 |
| Length (m) | 8 |
| Weight (kg) | 1,000 |
Classification
| Diet | Piscivore, Carnivore, Live Prey |
|---|---|
| Habitat | Terrestrial |
| Era | Early Cretaceous |
| Family | Spinosauridae |
| Genus | Irritator |
| Bio Group | Large Piscivore |
Stats
| Lifespan | 55 - 71 |
|---|---|
| Resilience | 130 |
| Attack | 79 |
| Defence | 28 |
| Medical Dart Resistance | 60 |
| Sedative Resistance | 45 |
| Poison Resistance | 150 |
| Appetite | 150 |
| Bite Size | 32 |
Security
| Security Rating | |
|---|---|
| Threat | Gyrosphere Ranger Team Tour Truck |
| Dinosaur Send / Summon | No |
Environmental Needs
| Comfort | 50% / 70% / 90% | |
|---|---|---|
| Cover (m2) | 1800 | 22% |
| Wetland (m2) | 2500 | 30% |
| Barren (m2) | 1000 | 12% |
| Deep Water (m2) | 3000 | 36% |
Genome Trait Chances
| Genetic Mods (Max) | 12 | |
|---|---|---|
| Thirst | 25% | Thirsty |
| Appetite | 25% | Large Appetite |
| Habituation | 8% | Docile |
| Aggression | 35% | Aggressive |
| Nocturnal | 8% | Nocturnal |
| Fitness | 25% | Fit |
| Intelligence | 50% |
Unlock requirements
Unlocked by retrieving the fossil from one of the following dig sites:
| Dig Sites | Locations | Fossils | Requirements (Logistics) | Duration | Cost |
|---|---|---|---|---|---|
| Romualdo Formation | South America ┗ Brazil ┗ Ceara | ![]() x2 ![]() x3 ![]() x3 | 6 | 45s | $561,000 |
Synthesis
| Eggs | 1 - 2 |
|---|---|
| Requirements (Genetics) | 8 |
| Scientists (Max) | 5 |
| Duration | 1m 30s |
| Cost | $546,000 |
| Cost (Genetic Mods) | $27,300 |
Incubation
| Requirements (Welfare) | 7 |
|---|---|
| Scientists (Max) | 5 |
| Duration | 3m 30s |
| Cost | $546,000 |
Breeding
| Nest Size | Large |
|---|---|
| Nest Location | Guest |
| Breeding Archetype | Average A |
| Eggs | 1 - 4 |
| Compatibility | 0% - 60% |
| Requirements (Welfare) | 4 |
| Duration | 1m 30s |
| Duration (Incubation) | 2m 30s - 4m 30s |
| Duration (Postpartum) | 1h 11m |
| Cost | $200,000 |
Disease
| Immune | None |
|---|---|
| Susceptible | None |
Description
The Irritator is a theropod spinosaurid dinosaur from South America. With long, large teeth and a weak but quick bite, along with the paleoecology of the region the Irritator lived in, this dinosaur probably had a primarily piscivore diet.
Discovery
An almost-complete skull of the Irritator was found in the Santana Formation of Brazil. Dating from the lower Cretaceous and being one of the few dinosaur fossils found in this region, the Irritator gained its name from the irritation felt by the authors who described the dinosaur when they realized the skull had been artificially reconstructed by the commercial fossil diggers who sold it to them.
Paleoecology
The Irritator lived during the early Cretaceous, around 110 million years ago. The Brazilian Santana Formation where the fossil was found is rich in fish and crocodyliform remains, which probably served as the Irritator’s main food source. The terrestrial environment of the time was arid to semi-arid, and there were shallow marine and coastal lagoon areas.



Cohabitation Preferences
Behaviors are scripted in game files but are not guaranteed to happen. Dominance, territory, and traits determine whether they would actually fight.