Fig. 13 | Swiss Journal of Palaeontology

Fig. 13

From: Emergence and early radiation of cyrtocrinids, with new species from a Lower to Middle Jurassic rock reef of Feuguerolles (Normandy, France)

Fig. 13

Praetetracrinus inornatus, radials and primibrachials. aj Praetetracrinus inornatus (Simms). a radial without interradial processes, a1 adoral, a2 aboral; MHNLM 2015.1.95, sample 540-1, early Toarcian (Tenuicostatum Chronozone, first occurrence of species), Feuguerolles (Normandy). b Radial with interradial processes, b1 adoral, b2 aboral; MHNLM 2015.1.96, sample 375-7, early Toarcian (Tenuicostatum/Serpentinum Chronozones), Feuguerolles (Normandy). c Adoral view of radial with interradial process on one side; MHNLM 2015.1.97, sample 293-2, late Toarcian (Variabilis Chronozone), Feuguerolles (Normandy). d Radial with weak interradial processes, d1 adoral, d2 aboral, d3 distal (facet); MHNLM 2015.1.98, sample 082-9 middle Toarcian (Bifrons Chronozone), Feuguerolles (Normandy). e Wide radial, aboral view with scratch marks; MHNLM 2015.1.99, sample 293-1, late Toarcian (Variabilis Chronozone), Feuguerolles (Normandy). f Thick radial, f1 adoral, note constriction, f2 distal, f3 aboral, f4 proximal, f5 proximal view of radial circlet reconstituted from f4; MHNLM 2015.1.100, sample 370-b, middle Toarcian (Bifrons Chronozone), Feuguerolles (Normandy). g First primibrachial, g1 adoral (interior), g2 aboral, g3 proximal facet, g4 distal facet; MHNLM 2015.1.101, sample 082-5, middle Toarcian (Bifrons Chronozone), Feuguerolles (Normandy). h Aboral view of high second primibrachial; MHNLM 2015.1.102, sample 211-4, early Toarcian (Serpentinum Chronozone), Feuguerolles (Normandy). i Second primibrachial, i1 aboral/proximal, i2 adoral; MHNLM 2015.1.103, sample 082-7, middle Toarcian (Bifrons Chronozone), Feuguerolles (Normandy). j low second primibrachial, j1 aboral, j2 adoral; MHNLM 2015.1.104, sample 418-4, early Toarcian (Serpentinum Chronozone), Feuguerolles (Normandy)

Back to article page