Collection

Apart of the exhibition section, the PSU museum also houses collections of organisms and fossils. Most of specimens came from teaching and research activities. These specimens are useful in natural history-related fields, including biology, ecology and in particular taxonomy. The obtained specimens will be preserved in international standard and cared by specialists. The collections can be divided into 5 groups, namely planktons, invertebrates (except insects), insects, vertebrates and fossils.

Collection	Number of specimens	Number of species	Number of species found in Thailand	% of species found in Thailand
Planktons	67	37	n/a	n/a
Invertebrates(exceptinsects)
Coral	n/a	200	428	44%
Crustacean	2,250	470	n/a	n/a
Seashell(dry)	1,300	400	n/a	n/a
Mollusc(wet)	2,000	n/a	n/a	n/a
Insects
Butterfly	10,100	950	1,291	74%
Springtail	n/a	61	n/a	n/a
Vertebrates
Fish	3,000	880	2,124	41%
Amphibian	1,376	83	141	59%
Reptile	613	148	325	46%
Bird	73	31	1,028	3%
Mammal	628	98	264	37%
Fossils
Plantfossil	178	n/a	n/a	n/a
Animalfossil	25	n/a	n/a	n/a
Total	20,000+	3,500+