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Pronunciation varies by accent · noun
(paleontology) Any extinct avialan in the family Hesperornithidae..
2020, Alan Feduccia, Romancing the Birds and Dinosaurs, Universal Publishers (BrownWalker Press), page 83, 9. Cretaceous foot-propelled divers, the hesperornithids, were grouped cladistically with loons (Eocene) and grebes (Miocene) as a clade, which would require re-evolution of teeth from an edentulous ancestor.
Finally, the Volgorod locality, Maastrichtian in age, has yielded two dinosaurs (an indeterminate hesperornithid and a basal theropod) and a few turtles.
The arrival of these hesperornithids in more southern waters during the early Campanian may indicate a cooler climate, closer shores, adaptations to changes in prey, or other factors.
Use hesperornithid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hesperornithid means (paleontology) Any extinct avialan in the family Hesperornithidae..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
2020, Alan Feduccia, Romancing the Birds and Dinosaurs, Universal Publishers (BrownWalker Press), page 83, 9. Cretaceous foot-propelled divers, the hesperornithids, were grouped cladistically with loons (Eocene) and grebes (Miocene) as a clade, which would require re-evolution of teeth from an edentulous ancestor.
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