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Pronunciation varies by accent · adjective
(paleontology) Having vertical lamellae on the siphuncle, hypothesized to be either outgrowths of the connecting ring, or the result of gerontic secretions..
Cyrtochoanitic orthoceracones or slightly curved cyrtoceracones in which the septal necks are longer than the brims, and in which the connecting ring does not attain the adoral septum. Deposits within the siphuncle, if present, limited to a continuous lamellose lining, exhibiting neither actinosiphonate nor annulosiphonate structure.
Use actinosiphonate when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Actinosiphonate means (paleontology) Having vertical lamellae on the siphuncle, hypothesized to be either outgrowths of the connecting ring, or the result of gerontic secretions..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Cyrtochoanitic orthoceracones or slightly curved cyrtoceracones in which the septal necks are longer than the brims, and in which the connecting ring does not attain the adoral septum. Deposits within the siphuncle, if present, limited to a continuous lamellose lining, exhibiting neither actinosiphonate nor annulosiphonate structure.
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