### Theory:

The term palaeobotany (paleobotany) is derived from two Greek words, palaeon which refers to "old", and botany which refers to the study of plants.
Palaeobotany is a discipline of study concerned with the recovery and identification of geologically old plant remnants.
It is a branch of paleontology that focuses on plant fossils, including algae, fungi, and related organisms, as well as mosses, ferns, and seed plants.
It is a study that helps us understand both the evolution of plant life and the ecology of ancient eras.
Fossils:
The prehistoric impressions that can range in age from hundreds to millions of years are known as fossils.
Any preserved portion of a long-dead plant is known as a plant fossil.
Most plant fossils are disarticulated parts of plants, as it is uncommon to find complete plants preserved.

Fossil of Betula leopoldae
Importance of fossils:
• Fossils play a prominent role in the phylogeny and evolution of plants.
• They serve as a historical bridge between the plants of the old and new era.
• They are useful in the classification of plants.
• Fossils of plants are used in the field of descriptive and comparative anatomy.
Kaspar Maria Von Sternberg:
He is prominently known as the "Father of Paleobotany". He was born in Europe ($$1761$$-$$1838$$), established the Bohemian National Museum in Prague. He is also known as the founder of Modern Paleobotany.
Birbal Sahani
Birbal Sahani (1891–1949)

He is popularly known as the "Father of Indian Paleobotany".
He presented his observations in two areas of Paleobotany:
1. The anatomy and morphology of Paleozoic Ferns, and
2. Fossil plants from the Indian Gondwana Formations.
Reference:
https://commons.wikimedia.org/wiki/File:Betula_leopoldae_SRIC_SR02-22-19.jpg
https://commons.wikimedia.org/wiki/File:Bust_of_Birbal_Sahni_(Birla_Industrial_%26_Technological_Museum).jpg