41. If the microfossils are in fact long-dead microbes, the remains should include cell walls and cellular machinery. 42. The major subdivisions of paleontology include paleozoology ( animals ), paleobotany ( plants ) and micropaleontology ( microfossils ). 43. Changes in the microfossil population abundance in the stratigraphy of current and former water bodies reflect changes in environmental conditions. 44. She determined that the microfossils found in the drill cuttings could be useful in the correlation of underground rock formations. 45. So far, they haven't sliced through the microfossils to see whether they're structured like earthly cells. 46. Even if proven to be remnants of life, the microfossils would not necessarily be the earliest life detected on Earth. 47. They are found in sediments together with similar microfossils of uncertain affinities ( nannoliths ) from the Upper Triassic to recent. 48. His results cast light on the environment in which the carbonate grains and so-called microfossils in that meteorite formed. 49. This lithological unit has yielded plentiful dinosaur remains in quantity and group, also including a great deal of microfossil material. 50. Furthermore, the clay consists of microfossils that date from the Pliocene period, about 4.5 million years ago.
