Fig. 4: Yale Peabody Museum specimens of Palaeocampa anthrax from Mazon Creek Lagerstätte.
From: Palaeocampa anthrax, an armored freshwater lobopodian with chemical defenses from the Carboniferous
a YPM IP 042834, specimen in dorsal view. Details of the head, if preserved, are obscure. b YPM IP 042833, specimen in dorsal view. Head missing. c YPM IP 042826, specimen in dorsal view. Possibly represents a molt. d YPM IP 036198, specimen in dorsal view. Head missing. The counterpart of this specimen was long previously coated in lead. Largest available specimen. e YPM IP 042827, specimen in dorsal view. Annuli and dermal papillae are preserved across the trunk dorsum. f YPM IP 042828, specimen in dorsal view. Possibly represents a molt. The anterior end of the trunk dorsum is strongly delineated, with a squared-off profile dorsally. g YPM IP 042831, specimen in lateral view. Trunk is strongly flexed, possibly in a defensive reflex during burial to better expose the spine tufts and protect the soft underbody. Trunk lobopods are preserved down the length of the trunk, with roughly circular cross sections occasionally exposed. Details of head obscure. Images courtesy of the Yale Peabody Museum (CC0). Abbreviations as in Figs. 1, 3. Scale bars represent 5 mm.
