Transitional evolutionary series from early pelycosaurs to ancestral therapsids ( which in turn were the ancestors of more advanced forms and finally the mammals ).
2.
According to Marton, the armlets with semi-moon ends are part of an evolutionary series that terminates with the later silver snake-headed bracelets of the Classical Dacian times.
3.
The "'Helios Prototype "'was the fourth and final aircraft developed as part of an evolutionary series of Environmental Research Aircraft and Sensor Technology ( ERAST ) program.
4.
Open fire systems had three major disadvantages that prompted an evolutionary series of improvements from the 16th century onwards : it was dangerous, it produced much smoke, and the heat efficiency was poor.
5.
The "'NASA Pathfinder "'and "'NASA Pathfinder Plus "'were the first two aircraft developed as part of an evolutionary series of Environmental Research Aircraft and Sensor Technology ( ERAST ) program.
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