Titel
Paleozoic origins of cheilostome bryozoans and their parental care inferred by a new genome-skimmed phylogeny
Autor*in
Emanuela Di Martino
Natural History Museum, University of Oslo
Mali H. Ramsfjell
Natural History Museum, University of Oslo
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Abstract
Phylogenetic relationships and the timing of evolutionary events are essential for understanding evolution on longer time scales. Cheilostome bryozoans are a group of ubiquitous, species-rich, marine colonial organisms with an excellent fossil record but lack phylogenetic relationships inferred from molecular data. We present genome-skimmed data for 395 cheilostomes and combine these with 315 published sequences to infer relationships and the timing of key events among c. 500 cheilostome species. We find that named cheilostome genera and species are phylogenetically coherent, rendering fossil or contemporary specimens readily delimited using only skeletal morphology. Our phylogeny shows that parental care in the form of brooding evolved several times independently but was never lost in cheilostomes. Our fossil calibration, robust to varied assumptions, indicates that the cheilostome lineage and parental care therein could have Paleozoic origins, much older than the first known fossil record of cheilostomes in the Late Jurassic.
Stichwort
Multidisciplinary
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Science Advances
Band
8
Ausgabe
13
ISSN
2375-2548
Erscheinungsdatum
2022
Publication
American Association for the Advancement of Science (AAAS)
Erscheinungsdatum
2022
Zugänglichkeit
Rechte
Rechteangabe
© 2022 The Authors, some rights reserved
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