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23 million years ago in a sentence

1. South America was apparently invaded from Central America by about the start of the Miocene, 23 million years ago.

2. About 23 million years ago another group of bearlike land mammals started returning to the sea.

3. The onset of formation of the Japan Arc was in the Early Miocene (23 million years ago).

4. The Oligocene Epoch spans from 34 million to 23 million years ago.

5. This volcano was active around 23 million years ago when this part of Australia was above a hotspot in the mantle.

6. Sarracenia diverged from Heliamphora later, around 23 million years ago.

7. The Pinnacles are part of the Neenach Volcano which erupted 23 million years ago near present-day Lancaster.

8. The red junglefowl and common pheasant diverged about 18–23 million years ago.

9. This volcano erupted around 23 million years ago.

10. Around 23 million years ago, western Japan was a coastal region of the Eurasia continent.

11. About 23 million years ago New Zealand was mostly underwater.

12. The genera within the Felinae diverged between 10.67 and 4.23 million years ago.

13. Megistotherium osteothlastes was a large hyaenodontid that lived during the early Miocene epoch some 23 million years ago.

14. Palaeolagus lived in the Oligocene period which was about 33-23 million years ago.

15. Aucanquilcha volcano proper is formed from four units that erupted between 1.04–0.23 million years ago.

16. Stratovolcanoes also began to form 23 million years ago, although most were constructed in the last 6 million years.

17. The Oligocene Epoch extends from about 34 million years ago to 23 million years ago.

18. From near Hobart there is olivine basalt from 23 million years ago.

19. The Middle North Sea Group was deposited from the late Eocene to late Oligocene, between 37 and 23 million years ago.

20. The vectors of Babesia and Theileria - ticks - evolved 350 million years ago ± 23 million years ago.

21. The hard (Ixodidae) and soft bodied (Argasidae) ticks diverged 290 million years ago± 23 million years ago.

22. It is the remains of the Chuska erg, a windswept sand field from the Oligocene era, about 34 million to 23 million years ago.

23. About 23 million years ago another group of bearlike land mammals started returning to the sea.

24. Riesenstein is composed of Neogene Miocene (from 23 million years ago to 8 million years ago) quartzite.

25. It is composed of Neogene Miocene (from 23 million years ago to 8 million years ago) quartzite.

26. The Querecual is believed to have matured during the Oligocene (~33.9 to 23 million years ago), proceeding from north to south.

27. It lived in China and Kazakhstan during the late Oligocene epoch (28–23 million years ago).

28. The sediment that now forms the rock deposited during the Miocene no earlier than 23 million years ago.

29. Foulden Maar, a fossil site near Middlemarch in Otago, New Zealand, formed in a volcanic eruption 23 million years ago.

30. The Foulden Maar lake formed in a volcanic crater during the Waitakian (early Miocene), approximately 23 million years ago.