TY - BOOK ID - 134097575 TI - On a new genus of siliceous sponges from the Trenton formation at Ottawa PY - 1889 SN - 0665249446 9780665249440 PB - [S.l. : publisher not identified, DB - UniCat KW - Sponges, Fossil. KW - Eponges fossiles. UR - https://www.unicat.be/uniCat?func=search&query=sysid:134097575 AB - ER -