page_title: List of the Paleozoic life of Utah
section_title: S
hierarchical_section_title: List of the Paleozoic life of Utah / S
caption_attribution_description: English: Fossils of Saukiella pepinensis from Wisconsin, on display at Gallery of Paleontology and Comparative Anatomy, Paris.
context_page_description: This list of the Paleozoic life of Utah contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Utah and are between 541 and 252.17 million years of age.
context_section_description: †Saffordotaxis
  †Sanguinolites
  †Sanguinolites elongatus – type locality for species
  †Saukia
   †Saukiella
  †Scandodus
  †Scandodus furnishi
  †Scaphellina – tentative report
  †Scenella
  †Scenella radians
  †Schizambon
  †Schizambon obtusus – type locality for species
  †Schizodus
  †Schizodus bifidus
  †Schizodus subovatus – type locality for species
  †Schizophoria
  †Schmalenseeia
  †Schuchertella
  †Schuchertella lens
  †Schwagerina
  †Scolicia
  †Scolopodus
  †Scolopodus gracilis
  †Scolopodus pseudoquadratus
  †Scolopodus quadraplicatus
  †Scolopodus rex
  †Seelyia
  †Selenocoryphe – type locality for genus
  †Selenocoryphe platyura – type locality for species
   †Selkirkia
  †Selkirkia columbia – or unidentified comparable form
  †Selkirkia spencei
  †Selkirkia willoughby
  †Sentinelia – tentative report
  †Sentinelia draco – or unidentified comparable form
  †Septimyalina
  †Septimyalina burmai – tentative report
  †Septopora
  †Septopora ulrichi
  †Shoshonorthis
  †Shoshonorthis michaelis
  †Shoshonorthis swanensis
  †Shumardia
  †Shumardia exopthalmus
   †Sidneyia
  †Sigillaria
  †Sigillaria brardii
  †Sinuella – tentative report
  †Siphonobolus – tentative report
  †Spathognathus
  †Spathognathus cristulus
  †Spathognathus scitulus
  †Spencella
  †Spencella utahensa – type locality for species
  †Spencella utahensis
   Sphenacodon
  †Sphenacodon ferocior – or unidentified comparable form
  †Sphenophyllostachys – tentative report
  †Sphenophyllum
  †Sphenophyllum angustifolium
  †Sphenophyllum verticillatum
  †Sphenopteridium
  †Sphenopteridium dissectum
  †Sphenopteridium zaitzeffii – type locality for species
  †Sphenopteris
  †Sphenopteris diphlebia – type locality for species
  †Sphenosteges
  †Sphenosteges hispidus
  †Spinilingula
  †Spinilingula prisca – type locality for species
  †Spinofacia – type locality for genus
  †Spinofacia pectinatus – type locality for species
   †Spirifer
  †Spirifer centronatus
  †Spirifer opimus
  †Spirifer rockymountanus
  †Spiriferina
  †Spirinella
  †Spirinella pauciplicata
  Spirorbis
  †Squamaria
  †Squamularia – report made of unidentified related form or using admittedly obsolete nomenclature
  †Stenolobulites
  †Stenolobulites simulator
  †Stenolobulites sinuosus
  †Stenopora
  †Stenopora confusionensis
  †Stenoporella
  †Stenoporella mineriensis
  †Stenorhachis – tentative report
  †Stenorhachis genalticurvatus
  †Stibaraster – type locality for genus
  †Stibaraster ratcliffei – type locality for species
   †Stigmaria
  †Stigmaria ficoides
  †Stigmariopsis
  †Stigmariopsis anglica
  †Stolodus – or unidentified related form
  †Stolodus stola
  †Straparollus
  †Streblochondria
  †Strebloplax
  †Strebloplax pertusa
  †Streblopteria
  †Streblopteria montpelierensis
  †Streblotrypa
  †Streblotrypa angulatum
  †Streptelasma
  †Striatifera
  †Striatifera brazeriana
  †Strigambitus
  †Strigambitus utahensis
  †Strobeus – or unidentified related form
  †Sulcoretepora
  †Supaia
  †Supaia rigida
  †Symphysurina
  †Symphysurina cleora – or unidentified comparable form
  †Symphysurina globocapitella
  †Symphysurina illaenoides
  †Symphysurina spicata – or unidentified comparable form
  †Symphysurina uncaspicata
  †Symphysurina walcotti
  †Symphysurus – tentative report
  †Synarmocrinus
  †Synarmocrinus depressus – type locality for species
  †Syntrophina
  †Syntrophina campbelli – or unidentified comparable form
  †Syntrophina carinifera
  †Syntrophopsis
  †Syntrophopsis polita
  †Syntrophopsis transversa
   †Syringopora
  †Syringopora aculeata
  †Syringopora surcularia
  †Syringothyris
  †Syringothyris textus
caption: Fossil of the Cambrian-Ordovician trilobite Saukiella
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