TT #170 · Parshas Shemini · Aliyah 5 · Passuk 31
Chabad.org — Vayikra Chapter 11 with Rashi
English: These are the impure among the swarming things; whoever touches them when dead shall be impure until evening.
Meilah 17a.
E-Daf.com — Meilah 17a (Tsurras Hadaf)
Textual inclusion — The plural term in the verse establishes that the listed sources of sheretz impurity can combine.
The different impure sheratzim can combine with one another for the relevant measure of impurity.