化石 and 標本: Found Fossils and Prepared Specimens
Compare a museum fish fossil and a leaf fossil found in rock with insect specimens and a dried leaf specimen. Read the names alongside the acts of discovery, observation, and preparation.
A fish fossil examined and a leaf fossil found
化石 (かせき) means fossil. 「博物館で大きな魚の化石を観察した。」 — “I examined a large fish fossil at the museum.” The object examined at the museum is a large fish fossil.
「岩の割れ目から葉の化石が見つかった。」 — “A leaf fossil was found in a crack in the rock.” The leaf fossil was found in a crack in the rock. 見つかった reports the discovery without naming someone who personally collected or made it.
Specimens observed and a specimen prepared
標本 (ひょうほん) means specimen. 「理科室で昆虫の標本を観察した。」 — “We observed insect specimens in the science room.” This example reports observing insect specimens in a science room, rather than making new specimens.
「採取した葉を乾燥させて標本にした。」 — “We dried the collected leaf and made it into a specimen.” Here a collected leaf was dried and made into a specimen. Keep the leaf preparation separate from the earlier example of observing insect specimens.
Read the name, source, and action
化石 names the object as a fossil, while 標本 focuses on its use as a specimen. The names need not be treated as mutually exclusive categories; identify the object and action actually described in each sentence.
The two leaf examples make the distinction concrete. One reports a leaf fossil found in rock; the other reports drying a collected leaf into a specimen. Drying the leaf alone is not described as turning it into a fossil.
Is drying a collected leaf and making it into 「標本」 the same object and action as 「葉の化石が見つかった」?
Show the answer and why
No. The first describes preparing a specimen from a collected leaf; the second reports a leaf fossil found in a crack in rock. Do not read every dried leaf as a fossil or treat the names 化石 and 標本 as mutually exclusive.

