amniote
noun
am·ni·ote
ˈam-nē-ˌōt 
: any of a group (Amniota) of vertebrates that undergo embryonic or fetal development within an amnion and include the birds, reptiles, and mammals
amniote
adjective
Examples of amniote in a Sentence
Recent Examples on the Web
The tuatara genome reveals ancient features of amniote evolution.
—
Joshua Rapp Learn, Discover Magazine, 22 July 2024
Molecular diversity and evolution of neuron types in the amniote brain
Behavioural processes.
—Lily Carey, Discover Magazine, 8 Apr. 2024
Three-dimensional skin cast and compression fossils from unknown amniotes.
—Evan Bush, NBC News, 11 Jan. 2024
The fossils are a kind of milepost for when amniotes were settling in on land and establishing the foundational traits of later creatures like fuzzy mammals and feathery dinosaurs.
—Riley Black, Smithsonian Magazine, 11 Jan. 2024
Described Thursday in Current Biology, these tatters of fossil skin and various skin impressions come from some of the earliest amniotes.
—Riley Black, Smithsonian Magazine, 11 Jan. 2024
During the Carboniferous Period, the evolutionary adaption of the amniote egg allowed the early tetrapods to lay their eggs on land — allowing the species to transition to a fully on-land lifestyle, according to the University of California Museum of Paleontology.
—Elizabeth Gamillo, Discover Magazine, 11 Jan. 2024
The solution to land's dry nature was to encase eggs in a number of membrane layers, in what is now known as an amniote egg.
—Christie Wilcox, Discover Magazine, 28 July 2012
The tumor that afflicted a poor Pappochelys some 240 million years ago is the oldest evidence of this type of cancer in an amniote, a lineage of four-limbed vertebrates, or tetrapods, that includes reptiles, birds and mammals.
—Gemma Tarlach, Discover Magazine, 7 Feb. 2019
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Joshua Rapp Learn, Discover Magazine, 22 July 2024
Molecular diversity and evolution of neuron types in the amniote brain
Behavioural processes.
—Lily Carey, Discover Magazine, 8 Apr. 2024
Three-dimensional skin cast and compression fossils from unknown amniotes.
—Evan Bush, NBC News, 11 Jan. 2024
The fossils are a kind of milepost for when amniotes were settling in on land and establishing the foundational traits of later creatures like fuzzy mammals and feathery dinosaurs.
—Riley Black, Smithsonian Magazine, 11 Jan. 2024
Described Thursday in Current Biology, these tatters of fossil skin and various skin impressions come from some of the earliest amniotes.
—Riley Black, Smithsonian Magazine, 11 Jan. 2024
During the Carboniferous Period, the evolutionary adaption of the amniote egg allowed the early tetrapods to lay their eggs on land — allowing the species to transition to a fully on-land lifestyle, according to the University of California Museum of Paleontology.
—Elizabeth Gamillo, Discover Magazine, 11 Jan. 2024
The solution to land's dry nature was to encase eggs in a number of membrane layers, in what is now known as an amniote egg.
—Christie Wilcox, Discover Magazine, 28 July 2012
The tumor that afflicted a poor Pappochelys some 240 million years ago is the oldest evidence of this type of cancer in an amniote, a lineage of four-limbed vertebrates, or tetrapods, that includes reptiles, birds and mammals.
—Gemma Tarlach, Discover Magazine, 7 Feb. 2019
Cite this Entry
“Amniote.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amniote. Accessed 5 May. 2025.
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