Figure 1 in Oldest shrimp and associated phyllocarid from the Lower Devonian of northern Russia

Figure 1. Pechoracaris aculicauda sp. nov. from the Medynskoye 1 borehole, Timan-Pechora region, polar Russia, depth 4255.0–4262.7 m, Lower Devonian (Lochkovian?); flattened specimens in laminated claystone. A, carapace with abdomen and partially preserved spine (PIN 4983/21a). B, slightly obliquely compressed specimen (PIN 4983/31a). C, specimen with well preserved dorsal margin of the carapace (PIN 4983/10). D, holotype showing spinose appearance of abdominal appendages (PIN 4983/21b). E, partially preserved specimen with complete abdominal spine (PIN 4983/7). F, specimen with clearly visible crushed mandibles (PIN 4983/31b).