Even microfossil data can be unreliable if there are hiatuses in the fossil record.
From the en.wikipedia.org
There is also a case for a fungal affinity for the enigmatic microfossil Ornatifilum.
From the en.wikipedia.org
It is only the microfossil pollen and algae that can tell us this.
From the sciencedaily.com
New excavations and a growing collection of plant microfossil remains rapidly adds pieces to this puzzle.
From the sciencedaily.com
A typical microfossil study will involve identification of a few hundred specimens from each of ten to a hundred samples.
From the en.wikipedia.org
The microfossil species digitized by the U of A's VLRM prototype were found in rock known by geologists to be 60 million years old.
From the sciencedaily.com
Larger animals are too scarce in the fossil record for good statistics, so paleontologists have analyzed microfossil extinctions.
From the en.wikipedia.org
Phytoliths are another type of plant microfossil that is preserved for thousands of years and can be used to distinguish domesticated from wild maize.
From the sciencedaily.com
Six years ago, the Brandywine Hundred fossil dealer picked up that microfossil in dirt that had been brought to the surface by harvester ants in Nebraska's Badlands.
From the delawareonline.com
More examples
A fossil that must be studied microscopically
Micropaleontology (also sometimes spelled as micropalaeontology) is that branch of paleontology which studies microfossils.
(Microfossils) Fossils (from Latin fossus, literally "having been dug up") are the preserved remains or traces of animals, plants, and other organisms from the remote past. ...
(Microfossils) Fossils evidence of microscopic organisms, often single cells including bacteria, preserved in the rock. These are seen by cutting thin sections through the rock and examining the sections with a microscope.
A very small fossil, best studied with the aid of a microscope