page_title: List of the Mesozoic life of California
section_title: S
hierarchical_section_title: List of the Mesozoic life of California / S
caption_attribution_description: English: Species of Shastasaurus - giant Late Triassic ichthyosaur. Русский: Виды рода Shastasaurus — гигантские позднетриасовые ихтиозавры.
context_page_description: This list of the Mesozoic life of California contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of California and are between 252.17 and 66 million years of age.
context_section_description: †Sagenites
  †Sagenites dickersoni – type locality for species
  †Saghalinites
  †Sandlingites
  †Sandlingites andersoni – type locality for species
  †Sandlingites oribasus
  †Sarasinella
  †Sarasinella angulata
  †Saturniforma
  †Saturniforma peregrina
  †Scalarites
   †Scapanorhynchus
  Scaphander
  †Scaphander costatus
  †Scaphites
  †Scaphites hippocrepis – or unidentified related form
  †Scaphites inermis – or unidentified related form
  †Scaphites pittensis – type locality for species
  †Scaphotrigonia
  †Scaphotrigonia naviformis
  †Sciponoceras
  †Sciponoceras gracile – type locality for species
  Scobinella
  †Scobinella dilleri
  †Semihsuum
  †Semihsuum biscuithillense
  †Semihsuum brokencotense
  †Semihsuum inexploratum
  †Semihsuum sourdoughense
  †Senis
  Septifer
  †Sequoia
  †Sequoia reichenbachi
  Serpula
   †Shastasaurus
  †Shastasaurus alexandrae
  †Shastasaurus pacificus
  †Shasticrioceras
  †Shasticrioceras whitneyi – or unidentified related form
  †Shastites
  †Shastites compactus – type locality for species
  †Shastites compressus – type locality for species
  †Shastites whitneyi – type locality for species
  †Shastoceras
  †Silberlingia
  †Silberlingia sanctaeanae
  †Simbirskites
  †Simbirskites broadi
  †Simbirskites lecontei
  Siphonalia
  †Siphonalia dubius
  †Sirenites
  †Sirenites lawsoni – type locality for species
  †Skolithos
  Solariella
  †Solariella occidentalis
  †Solariella stewarti
  Solemya – tentative report
  Solen
  †Solen cuneatus – or unidentified comparable form
  †Solenoceras
  †Spiriferina – report made of unidentified related form or using admittedly obsolete nomenclature
  †Spiriferina coreyi – type locality for species
  †Spirigera – report made of unidentified related form or using admittedly obsolete nomenclature
  †Spirigera milesi – type locality for species
  †Spirogmoceras
  †Spirogmoceras shastense – type locality for species
  †Spondylospira
  †Spondylospira lewesensis
  †Spondylospira parmata
  Spondylus
  †Spondylus subnodosus
  †Spongiomorpha
  †Spongiomorpha tenuis
  †Spongocapsula
  †Spongocapsula dumitricai
  †Spongocapsula hooveri
  †Spongocapsula palmerae
  †Spongocapsula zamoraensis
  †Spongosaturninus
  †Spongosaturninus bispinus
   Squalicorax
  †Staurolonche
  Stichocapsa
  †Stichocapsa convexa
  †Stichocapsa japonica
  Stichomitra – tentative report
  †Stichomitra takanoensis
  †Stoliczkaia
  †Stoliczkaia praecursor – type locality for species
  †Stomechinus
  †Stomechinus hyatti
  †Striatojaponocapsa
  †Striatojaponocapsa conexa
  †Striatojaponocapsa plicarum
  †Stromatomorpha
  †Stromatomorpha californica – type locality for species
  †Sturia
  †Sturia woodini
  †Subhungarites
  †Subhungarites yatesi – type locality for species
  †Submeekoceras
  †Submeekoceras mushbachanum
  †Submortoniceras
  †Submortoniceras buttense
  †Submortoniceras buttensis – type locality for species
  †Submortoniceras chicoense
  †Submortoniceras gabbi
  †Submortoniceras pentzanum – type locality for species
  †Submortoniceras randalli
  †Submortoniceras studleyi
  †Subprinocyclus
  †Subprionocyclus
  †Subprionocyclus branneri
  †Subprionocyclus neptuni – or unidentified comparable form
  †Subprionocyclus normalis – or unidentified comparable form
  †Subprionocyclus oregonense
  † Suna
  †Suna ehrenbergi
  †Suna haeckeli
  †Suna harperi
  †Sympolycyclus
  †Sympolycyclus kellyi – type locality for species
  †Sympolycyclus nodifer – type locality for species
  †Syncyclonema
  †Syncyclonema latum – type locality for species
  †Syncyclonema operculiformis
caption: Life restoration of three species of the Middle-Late Triassic ichthyosaur genus Shastasaurus
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