and Harper, 2008 †Metorthis †Multicostella †Plaesiomys Hall and Clarke, 1892 †Retrorsirostra Schuchert and Cooper, 1932 †Valcourea Paleobiology Database...

sp. Rostricellula sp. ?Dalmanella sp. Bancroftina sp. Nicolella sp. Retrorsirostra sp. Ptychopleurella sp. Dolerorthis sp. Mcewanella sp. Aberia sp. ?Rhactorthis...

for species †Retispira tenuilineata †Retispira waverliensis †Retrorsirostra †Retrorsirostra carleyi †Rhachicrinus †Rhachicrinus wrighti †Rhachiopteris †Rhapanocrinus...

†Raphistomina modesta †Renalcis †Resserella †Resserella elegantula †Retrorsirostra †Retrorsirostra carleyi †Rhabdocrinus †Rhinidictya †Rhinidictya basalis †Rhinidictya...

Reticulatia Reticulatochonetes Reticulatrypa Retimarginifera Retroplexus Retrorsirostra Retzia Retziella Retzispirifer Reuschella Reversella Rhactomena Rhactorhynchia...

type locality for species †Retoporina †Retoporina striata †Retrorsirostra †Retrorsirostra carleyi †Retzia †Retzia raricosta †Rhabdocarpus †Rhabdocarpus...