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Dinoflagellata: Fossil Record
Information on this page pertains to dinoflagellates, the fossil record of which may extend into the Precambrian. Spherical organic-walled microfossils known as acritarchs, some of which may be dinoflagellate hystrichospheres, first appear in rocks about 1.8 billion years old. Exactly what the acritarchs were is not known with certainty; they probably included a number of clades of eukaryotic algae, and are thus a form taxon, including all those spore-like fossils which have not been conclusively assigned to another group.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
  • Informal
Type of resource:
  • Text:
    • Ref. material
  • Biology
  • Geological Sciences:
    • Geologic time
    • Paleontology
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Copyright 1996-2000 by The Museum of Paleontology of The University of California, Berkeley; the Regents of the University of California; and The Paleontological Society. No part of the referring document residing on the server may be reproduced or stored in a retrieval system without prior written permission of the publisher, except for educational purposes, and in no case for profit.
DLESE Catalog ID: DLESE-000-000-005-221
Educational standards:
  • National Science Education Standards (NSES):
    • 9-12:
      • C - Life science:
        • Biological evolution
        • The cell
      • G - History and nature of science:
        • Nature of scientific knowledge
Resource contact / Creator / Publisher:
Publisher: University of California Museum of Paleontology