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A New Species of Xyloplax (Echinodermata: Asteroidea: Concentricycloidea) from the Northeast Pacific: Comparative Morphology and a Reassessment of Phylogeny
A Second Species of Pyrgulopsis (Hydrobiidae) from the Missouri River Basin, with Molecular Evidence Supporting Faunal Origin through Pliocene Stream Capture Across the Northern Continental Divide
Phylogenetic Context and Basal Metazoan Model Systems
Placozoa no Longer a Phylum of One
Reassessment of the Phylogenetic Position of Conulariids (?Ediacaran-Triassic) within the Subphylum Medusozoa (Phylum Cnidaria)