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  • Crinozoa - Wikipedia
    A 2024 survey of recent research finds more support for Homalozoa as a paraphyletic assemblage along the echinoderm stem group, but noted that the position of Stylophora in particular was uncertain
  • Fossil Record of Echinoderms - Assembling the Echinoderm Tree of Life
    Discoveries of new fossil echinoderm specimens, especially from the lower Paleozoic of the Gondwana paleocontinent (northern Africa), are yielding both new, bizarre clades and stratigraphic range extensions of clades not previously known from Cambrian strata
  • Phylogenomics of extant Crinoidea (Echinodermata) reveals extensive . . .
    We present the first phylogenomic analyses of crinoids reliant on novel transcriptomic and targeted-exon capture, spanning 119 terminals We resolve Isocrinida as the sister group to the remainder of Articulata, which subdivides into Comatulida and a clade of Hyocrinida + Cyrtocrinida
  • n. gen. and other early echinoderm taxa inform crinoid
    The species name honors the late James — C Brower, student of fossil crinoids, who revealed much about early crinoids in his long and productive career His pioneering study of feeding strategies among Late Ordovician crinoids included cover plate information incorporated into this study
  • Fossil Echinoderms – Crinoids, Blastoids, and Others
    Echinoderms first appeared in the Cambrian, with three groups being particularly common as fossils: crinoids, blastoids, and sea urchins The echinoderm skeleton is composed of numerous small pieces, commonly made of calcium carbonate
  • Athenacrinus n. gen. and other early echinoderm taxa inform crinoid . . .
    We use new morphologic data, together with those from other Tremadocian crinoids, to characterize this skeletal construction of arms and to compare similar anatomy outside the crinoid clade with that of more archaic echinoderms
  • Crinoids - British Geological Survey
    Crinoids are marine animals belonging to the phylum Echinodermata and the class Crinoidea They are an ancient fossil group that first appeared in the seas of the mid Cambrian, about 300 million years before dinosaurs
  • Solving the Mystery of Crinoid Ancestry: New Fossil Evidence of Arm . . .
    Most of echinoderm diversity is available only from the fossil record There are five extant echinoderm classes, but more than four times that many major clades inhabited Paleozoic seas
  • Fossil Record of the Echinodermata
    Echinoderms in the modern sense, with mineralized skeletons, entered the fossil record in the early Cambrian Homalozoans and eocrinoids were prominent in the Cambrian; other Cambrian echinoderms included the unusual helicoplacoids
  • Fossil echinoderm collection - Natural History Museum
    The diversity and abundance of echinoderm fossils is reflected in the Museum’s large, world-class collection





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