Do all viruses have capsid?

Capsid:

1. The capsid is the protein shell of a virus, having its genetic material.
2. It consists of several oligomeric structural subunits made of protomers protein.
3. All viruses consist of a head region or capsid which has its genetic material.
4. It is made up of glycoproteins and proteins.
5. The constituents of capsid vary among viruses because of the specificity of the virus-host entity.
6. Some viruses possess membranous envelopes around the capsid.
7. Some possess genetic material in the form of RNA, and DNA while some are in enzyme form.
8. Yes, all viruses have capsids.