Acadoparadoxides, SNAJDR, 1957

Laibl, Lukáš, Esteve, Jorge & Fatka, Oldřich, 2016, Enrollment And Thoracic Morphology In Paradoxidid Trilobites From The Cambrian Of The Czech Republic, Fossil Imprint 72 (3 - 4), pp. 161-171 : 163

Acadoparadoxides cf. sacheri ( BARRANDE, 1852)

Text-fig. 4

Only one, incomplete, partially enrolled specimen (NM-L 4776, Text-fig. 4a ) has been at our disposal. The preserved part of the exoskeleton is 155 mm long; the length of complete specimen is supposed to reach about 180 mm. The posterior part of the thorax is strongly flexed ventrally. The maximal bending of the thorax is between the 10 th and 15 th tergite. The right librigena is preserved in situ; the left librigena together with a part of fixigena and the anterior-most part of glabella are split off. The posterior-most part of the exoskeleton behind 15 th tergite is not preserved. The flexed posterior part of the trunk is slightly inclined to the right. The pleural spines overlap in the flexed part of the thorax. A small rounded tumor-like neoplasm is developed at the right side of occipital ring (see Šnajdr 1978 and Babcock 2007).

Figures

Text-fig. 4. Acadoparadoxides cf. sacheri (BARRANDE, 1852); Jince Formation, Paradoxides paradoxissimus gracilis Biozones, Příbram-Jince Basin: a – specimen no. NM-L 4776, from dorsal (a1), oblique lateral (a2) and posterior (a3) view. Abbreviations: pm – pathological malformation.