page_title: List of the Mesozoic life of Texas
section_title: R
hierarchical_section_title: List of the Mesozoic life of Texas / R
caption_attribution_description: English: Photo of a live Ringicula doliaris.
context_page_description: This list of the Mesozoic life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas and are between 252.17 and 66 million years of age.
context_section_description: †Rachiosoma
  †Rachiosoma hondoensis – type locality for species
  †Radiopecten
  †Radiopecten mississippiensis
  Raja
  †Raja farishi – type locality for species
  †Ramsetia
  †Ramsetia whitfieldi
  †Raninella
  †Remera
  †Remera decora
  †Remera juncea
  †Remera microstriata
  †Remnita
  †Remnita anomalocostata
  †Remnita biacuminata
  †Remondia
  †Remondia robbinsi
  Reophax
  †Reophax deckeri
  †Reptomulticava
  †Restes
  †Rewaconodon – or unidentified related form
  †Rewaconodon tikiensis
  †Rhamphidoceras – type locality for genus
  †Rhamphidoceras saxatilis – type locality for species
  Rhinobatos
  †Rhinobatos craddocki – type locality for species
  †Rhinobatos uvulatus – type locality for species
   †Rhombodus
  †Rhombodus binkhorsti
  †Rhytidohoplites
  †Rhytidohoplites robertsi
  †Rhytophorus – tentative report
  †Richardoestesia
  †Richardoestesia gilmorei
  †Richardoestesia isosceles – type locality for species
  †Rileymillerus – type locality for genus
  †Rileymillerus cosgriffi – type locality for species
   Ringicula
  †Ringicula anfractoline
  †Ringicula arlingtonensis
  †Ringicula culbertsoni
  †Ringicula pulchella
  †Ringicula sufflata
  Rogerella
  †Rogerella cragini – type locality for species
  †Romaniceras
  †Romaniceras aguilerai
  †Romaniceras zacatecana
  Rostellaria – tentative report
  †Rostellaria robertsi
  †Russellosaurus – type locality for genus
  †Russellosaurus coheni – type locality for species
   †Rutiodon
caption: A living Ringicula sea snail
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