Styxosaurus

Release Version: Late Cretaceous Pack

Classification

DietPiscivore
HabitatAquatic
EraLate Cretaceous
FamilyElasmosauridae
GenusStyxosaurus
Bio GroupMarine Reptile

Size

Height (m)1
Length (m)10
Weight (kg)4,000

Rating

Base Appeal789
Appeal (Per $1MM)805.1
Appeal (Per Hectare)1400.2
Base Dominance102
Base AppealAppeal (Per $1MM)Appeal (Per Hectare)Base Dominance
Styxosaurus
Median

Stats

Lifespan40 - 80
Resilience130
Attack82
Defence20
Medical Dart Resistance140
Sedative Resistance82
Poison Resistance150

Security

Security Rating3
ThreatNone
Dinosaur Send / SummonNo

Environmental Needs

Comfort50% , 70% , 90%
Open Space (m2)13000100%
Tuna (m2)4

Cohabitation Preferences

Social Group2 - 4
Ideal Population0 - 15
Area Need Growth+15%
Likes
Liked By
Dislikes

None

Disliked By
Neutral
None
Fight
Hunt
Pack Hunt
Socialize

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

Unlock requirements

Unlocked by retrieving the fossil from one of the following dig sites:

Dig SitesLocationsFossilsRequirements (Logistics)DurationCost
Coal Oil CanyonNorth AmericaUSAKansas
fossil_plesiosaur_uncommonx2
fossil_plesiosaur_rarex1
fossil_plesiosaur_commonx2
607:00$760,000
Hell Creek Formation ANorth AmericaUSAMontana
fossil_plesiosaur_uncommonx1
fossil_plesiosaur_rarex1
fossil_plesiosaur_commonx3
404:00$100,000

Synthesis

Eggs1 - 3
Requirements (Genetics)9
Scientists (Max)3
Duration02:40
Cost$400,000

Incubation

Requirements (Welfare)9
Scientists (Max)3
Duration07:30
Cost$780,000

Genome Trait Chances

Genetic Mods (Max)7
Humility25%Needy
Aggression25%Aggressive
Defence25%Vulnerable
Fitness25%Unfit

Disease

ImmuneAlgae Poisoning
Bracken Poisoning
Foot And Mouth
Ivy Poisoning
Hyperoxalemia
SusceptibleNone

Description

Notable for its extended neck, Styxosaurus is a carnivorous plesiosaur from the late Cretaceous period that can grow up to 11m in length and feeds on fish, squid and other marine life. This genus has very sharp teeth and a powerful jaw, making it one of the most efficient predators of its time.

Discovery

The first Styxosaurus was discovered by Samuel Wendell Williston in 1890, near the Hell Creek Formation in Kansas, USA. The remains were initially ascribed to Cimoliasaurus, another plesiosaur of that era – it wasn’t until 1943 that it was formally named Styxosaurus. The genus takes its name from Greek mythology, its appearance comparable to the terrifying creatures said to live within the River Styx.

Paleoecology

Styxosaurus lived in the coastal waters of North America around 70-85 million years ago, and used its streamlined body and large fins to swim at speed in search of prey. It fed by swallowing shoals of fish whole and lived alongside prehistoric sharks as well as mosasaurs such as Tylosaurus.

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