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Having a theca; encased or sheathed.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Byronida has recently been considered as an entirely extinct order of thecate scyphozoans (Bischoff 1989; Holmer 2004; Wrona 2004; van Iten et al.
Owen KC, Norris DR (1984) Cysts and Life Cycle Considerations of the Thecate Dinoflagellate Fragilidium, Balech ex Loeblich.
Some species were identified tentatively, especially some small-sized thecate species and some Prorocentrum spp.
The thecate dinoflagellate species composition of Bahia Fosforescente has also been described (Hernandez-Becerril & Navarro, 1996).
Nematocysts as taxonomic discriminators in thecate hydroids.