Palpebralia brecciae ( Richter, 1913 )

Feist, Raimund, 2002, Trilobites from the latest Frasnian Kellwasser Crisis in North Africa (Mrirt, central Moroccan Meseta), Acta Palaeontologica Polonica 47 (2), pp. 203-210 : 206

publication ID	https://doi.org/10.5281/zenodo.13175056
DOI	https://doi.org/10.5281/zenodo.13175070
persistent identifier	https://treatment.plazi.org/id/03D887C9-FF88-FF83-FF96-FBBB8CB6F882
treatment provided by	Felipe (2024-07-19 00:33:50, last updated 2024-11-27 07:33:04)
scientific name	Palpebralia brecciae ( Richter, 1913 )
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Palpebralia brecciae ( Richter, 1913)

Fig. 2C, D, F, I, J View Fig .

Palpebralia brecciae Richter, 1913 ; Feist and Schindler 1994: 208, pl. 2: 1–11 (see list of older synonymies here).

Material.—Figured specimens: 2 cranidia from locality 2 ( UM 2− RF 179, 182), 1 librigenae from locality 2 ( UM 2− RF 180), 1 pygidium from locality 1, upper trilobite association ( UM 2− RF 181); additional material from section “2”, upper trilobite association: 10 cranidia ( UM 2− RF 183–192), 4 librigenae ( UM 2− RF 193–196), 10 pygidia (197–206).

Remarks.—In the present material the anterior branches of the facial suture are slightly more divergent anteriorly than in the type species of P. brecciae from Langenaubach. However, this feature varies within the same population (see Fig. 2C and J View Fig ). Likewise contemporaneous populations of Palpebralia brecciae from European sections exhibit variations in the degree of divergence of the anterior suture depending on size and preservation ( Feist and Schindler 1994: pl. 2). The middle part of the occipital furrow is slightly curved forward. In these features the new material is identical with the material from Coumiac.

References

Feist, R. and Schindler, E. 1994. Trilobites during the Frasnian Kellwasser Crisis in European Late Devonian cephalopod limestones. Willi Ziegler- Festschrift II. Courier Forschungsinstitut Senckenberg 169: 195 - 223.

Richter, R. 1913. Beitrage zur Kenntnis devonischer Trilobiten. II. Oberdevonische Proetiden. Abhandlungen der senckenbergischen naturforschenden Gesellschaft 31: 341 - 393.

Figures

Fig. 2. A, B, E, G, H. Gondwanaspis mrirtensis gen. et sp. nov. from section “2”, upper trilobite association. A, B, G. Holotype, cephalon with damaged right cheek, UM2−RF 170, partially external mould, in dorsal view (A), × 9.2; in frontal view (B) showing frontal and left antero−lateral borders and eye elevation, × 8.3; lateral view (G), × 9.5. E. Cephalon with incomplete left cheek, UM2−RF 171, dorsal view, latex cast of external mould, × 8.1. H. Cephalon with incomplete left cheek, UM2−RF 172, dorsal view, external mould, × 11.1. C, D, F, I, J. Palpebralia brecciae Richter and Richter, 1927. C, F. Cranidium from section “2”, upper trilobite association, UM2−RF 179, external mould, in dorsal view (C), × 10; in lateral view (F), × 9.6. D. Librigena +