A new caridean shrimp (Crustacea: Decapoda: Dendrobranchiata) from the Upper Jurassic Solnhofen Lithographic Limestones of Schernfeld (South Germany)
A new genus and species of caridean shrimps, Occultocaris frattigianii nov. gen. et sp., is described from the Upper Jurassic Solnhofen Lithographic Limestones of Schernfeld near Eichstatt (Lower Tithonian, Hybonotum Zone). It differs from other genera of carideans primarily in the armature of the rostrum in combination with the shape of the chelae of the first and second pereiopods.
A new genus and species of caridean shrimps from the Upper Jurassic Solnhofen Lithographic Limestones of Schernfeld (S Germany)
A new genus and species of caridean shrimps, Schernfeldia schweigerti nov. gen. nov. sp., is described from the Upper Jurassic Solnhofen Lithographic Limestones of Schernfeld near Eichstatt (Lower Tithonian, Hybonotum Zone). It differs from other genera of carideans primarily in the shape of the rostrum.
The macruran decapod crustaceans of the Lower Cretaceous ( Lower Barremian )
The macruran decapod crustaceans of the Lower Cretaceous (Lower Barremian) of Las Hoyas have already been the subject of a study at the beginning of the 90s. The examined specimens were ascribed to the species Delclosia martinelli Rabada, 1993 (infraorder Caridea Dana, 1852, indeterminate family) and Pseudastacus llopisi Via, 1971 (infraorder Astacidea Latreille, 1803, family Nephropidae Dana, 1852) respectively. The analysis of the wide sample of macruran decapod crustaceans, housed in the Autonomous University of Madrid and in the private collection of Mr. Armando Dfaz-Romeral, allowed to carry out a detailed morphological description of both species, by emphasizing new features previously not observed and deepening the analysis of other features already known in the past. Unlike the original description, the study of the examined sample has so allowed the ascription and systematic revision of the two species: in fact Delclosia martinelli Rabada, 1993 has been ascribed to the family Atyidae de Haan, 1849 while Pseudastacus llopisi Via, 1971 has been ascribed to the living genus Austrapotamobius Skorikov, 1907 (family Astacidae Latreille, 1802) on the basis of some common features, such as the structure of the chela of pcreiopod I, the number of postorbital teeth and the structure of the tail fan. The presence of Austrapotamobius Skorikov, 1907 in Las Hoyas outcrop represents the first report of this genus in the fossil