10.5061/DRYAD.JS3PH
Cole, Selina R.
The Ohio State University
Data from: Phylogeny and morphologic evolution of the Ordovician Camerata
(Class Crinoidea, Phylum Echinodermata)
Dryad
dataset
2016
Camerata
Diplobathrida
Echinodermata
Monobathrida
Crinoidea
National Science Foundation
https://ror.org/021nxhr62
1036416
2016-08-16T13:55:36Z
2016-08-16T13:55:36Z
en
https://doi.org/10.1017/jpa.2016.137
2730288 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The subclass Camerata (Crinoidea, Echinodermata) is a major group of
Paleozoic crinoids that represents an early divergence in the evolutionary
history and morphologic diversification of class Crinoidea, yet
phylogenetic relationships among early camerates remain unresolved. This
study conducted a series of quantitative phylogenetic analyses using
parsimony methods to infer relationships of all well-preserved Ordovician
camerate genera (52 taxa), establish the branching sequence of early
camerates, and test the monophyly of traditionally recognized higher taxa,
including orders Monobathrida and Diplobathrida. The first phylogenetic
analysis identified a suitable outroup for rooting the Ordovician camerate
tree and assessed affinities of the atypical dicyclic family
Reteocrinidae. The second analysis inferred the phylogeny of all
well-preserved Ordovician camerate genera. Inferred phylogenies confirm:
(1) the Tremadocian genera Cnemecrinus and Eknomocrinus are sister to the
Camerata; (2) as historically defined, orders Monobathrida and
Diplobathrida do not represent monophyletic groups; (3) with minimal
revision, Monobathrida and Diplobathrida can be re-diagnosed to represent
monophyletic clades; (4) family Reteocrinidae is more closely related to
camerates than to other crinoid groups currently recognized at the
subclass level; and (5) several genera in subclass Camerata represent stem
taxa that cannot be classified as either true monobathrids or true
diplobathrids. The clade containing Monobathrida and Diplobathrida, as
recognized herein, is termed Eucamerata to distinguish its constituent
taxa from more basally positioned taxa, termed stem eucamerates. The
results of this study provide a phylogenetic framework for revising
camerate classification, elucidating patterns of morphologic evolution,
and informing outgroup selection for future phylogenetic analyses of
post-Ordovician camerates.
Supplemental Data 1: Character Matrix for Preliminary Camerate
Phylogenetic AnalysisPhylogenetic character matrix for the 26 crinoid and
blastozoan taxa included in the preliminary
analysis.Cole_SupplementalData1.xlsxSupplemental Data 2: Character Matrix
for Comprehensive Camerate Phylogenetic AnalysisPhylogenetic character
matrix for the 52 camerate taxa included in the comprehensive
analysis.Cole_SupplementalData2.xlsxSupplemental Data 3: Strict Consensus
Tree from Unweighted Comprehensive AnalysisStrict consensus of 801 trees
from the unweighted comprehensive parsimony
analysis.Cole_SupplementalData3.tifSupplemental Data 4: Tree from
Reweighted Comprehensive Analysis, Rooted with CnemecrinusSingle most
parsimonious tree recovered from the reweighted comprehensive parsimony
analysis, rooted using Cnemecrinus.Cole_SupplementalData4.tif
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