, Volume 91, Issue 3, pp 291–298 | Cite as

A new genus and species of raninoid crab from the Upper Cretaceous of Mississippi

  • Torrey NyborgEmail author
  • George E. Phillips
  • Barry Van Bakel
  • Francisco J. Vega
Research Paper


A new genus and species of raninoid crab, Carinatus galebishopi, is described from the upper Maastrichtian Prairie Bluff and Owl Creek formations of Mississippi. Carinatus galebishopi gen. et sp. nov. fits best within the Raninidae, Subfamily Symethinae, based upon similar dorsal carapace characteristics of member genera. The new crab possesses distinctive dorsal carapace ornamentation setting it apart from described symethines and warrants establishment of a new genus. Carinatus galebishopi represents the first Cretaceous symethine crab and suggests the subfamily may have migrated eastward across the North Atlantic—Maastrichtian of Mississippi, Danian of New Jersey, and Ypresian of Spain—before dispersing to the Indo-Pacific.


Decapoda Carinatus Prairie Bluff Formation Owl Creek Formation Maastrichtian Mississippi USA 



Mississippi Museum of Natural Science—Jackson, Mississippi, USA


South Dakota School of Mines and Technology—Rapid City, South Dakota, USA


Eine neue Gattung und Art raninoider Krabben (Carinatus galebishopi gen. et sp. nov.) wird aus den Prairie Bluff- und Owl Creek-Formationen (Ober-Maastrichtium) des Bundesstaates Mississippi beschrieben. Carinatus galebishopi wird, basierend auf ähnlichen dorsalen Carapaxmerkmalen vergleichbarer Gattungen, der Familie Raninidae (Unterfamilie Symethinae) zugeordnet. Die neue Krabbe besitzt eine unverwechselbare (dorsale) Carapaxornamentierung, die von anderen beschriebenen Symethinae nicht bekannt ist und somit die Aufstellung einer neuen Gattung rechtfertigt. Carinatus galebishopi stellt den ersten kretazischen Vertreter der Symethinae dar und zeigt an, dass Vertreter dieser Unterfamilie möglicherweise zuerst ostwärts über den Nordatlantik gewandert sind: Mississippi (Maastrichtium), New Jersey (Danium), Spanien (Ypresium) – bevor sich diese im Indo-Pazifik ausgebreitet haben.


Decapoda Carinatus Prairie Bluff-Formation Owl Creek-Formation Maastrichtium Mississippi USA 



We are grateful to landowners Henry and Tmora Payne for access to MS.58.021 and W. C. Smallwood for access to MS.73.042. We also thank Javier Luque, Sylvain Charbonnier, and Mike Reich for their very thoughtful reviews.


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Copyright information

© Paläontologische Gesellschaft 2017

Authors and Affiliations

  • Torrey Nyborg
    • 1
    Email author
  • George E. Phillips
    • 2
  • Barry Van Bakel
    • 3
    • 4
  • Francisco J. Vega
    • 5
  1. 1.Department of Earth and Biological SciencesLoma Linda UniversityLoma LindaUSA
  2. 2.Conservation & Biodiversity SectionMississippi Museum of Natural ScienceJacksonUSA
  3. 3.Oertijdmuseum De Groene PoortBoxtelThe Netherlands
  4. 4.Naturalis Biodiversity CenterLeidenThe Netherlands
  5. 5.Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad UniversitariaCoyoacánMexico

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