capitalized : a genus (the type of the family Fusulinidae) of large fossil spindle-shaped foraminiferans having a test with 4-layered walls and deeply folded septa and serving as an index fossil in various Lower and Middle Pennsylvanian rocks
plural -s : an animal or fossil of Fusulina or a related genus

Word History


New Latin, from Latin fusus spindle + -ulus (diminutive suffix) + New Latin -ina

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Dictionary Entries Near fusulina

Cite this Entry

“Fusulina.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fusulina. Accessed 19 Jun. 2024.

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