... Research Institution (PRI), Ithaca, New York; and the Burke Museum of the University of Washington (UWBM). Class Euthycarcinoidea Gall and Grauvogel, 1964 Genus Antarcticarcinus new genus Antarcticarcinus pagoda n. gen. n. sp. by monotypy. Euthycarcinidea with a pair...

... in these settings. This new material includes the earliest known occurrence of the Phyllocarida (Crustacea: Malacostraca) with well-preserved limbs, as well as the earliest examples of the Euthycarcinoidea, including two large, possibly related forms that exhibit a curious mixture of characters. One...

... to preserve the medial impression. The type 1 and 2 trackways may have been produced by Euthycarcinoidea (cf. McNamara and Trewin, 1993 ), a rare arthropod group possessing the attributes (i.e., size, number of legs, homopodous) listed here. The oldest representative of this group is a specimen from...

... becomes distinguishable only by the attachment of the exopod (if a true exopod, and not an exite; Wolff and Scholtz 2008 ), which itself is not well constrained. Multipodomerous endopods with no clear separation of the basipod can characteristically be found in Euthycarcinoidea, a long problematic...

... , 31 : 5 - 7 . Moore , R. C. 1969 . Euthycarcinoidea , p. R196 – R199 . In R. C. Moore (ed.), Treatise on Invertebrate Paleontology, Pt. R, Arthropoda 4 . Boulder, Colorado, and University of Kansas Press , Lawrence, Kansas . Pennant , T. 1777 . British Zoology...

... of these communities. Trace fossils presented herein contribute to our understanding of early behavior of two groups of nonmineralizing arthropods, the Phyllocarida and Euthycarcinoidea. Co-occurrence of these animals with their traces allows the rare and unquestionable assignment of specific trace fossils...

... Polychaeta 7 16? Segmented worms Onychophora 1 1 Velvet worms Arthropoda Chelicerata 12 43 Horseshoe crabs, arachnids and sea spiders Euthycarcinoidea† 1 3 Extinct arthropod group Diplopoda 2 17? Millipedes Chilopoda 2 3 Centipedes Arthropleuridea† 1 2 Extinct...