The lineage is a bit different:
UNIX v7
l
=
l
4.4BSD-lite
l
386BSD
l l
FreeBSD NetBSD
l l l
DFBSD MidnightBSD OpenBSD
So if that graphic makes sense, 4.4BSD-lite, the last major BSD release, can be traced to UNIX v7 by Bell Labs. 386BSD was forked from the 4.4BSD-lite code, and NetBSD and FreeBSD broke off there, and from there, DragonFlyBSD and MidnightBSD broke off FreeBSD, and OpenBSD off NetBSD
UNIX v7
l
=
l
4.4BSD-lite
l
386BSD
l l
FreeBSD NetBSD
l l l
DFBSD MidnightBSD OpenBSD
So if that graphic makes sense, 4.4BSD-lite, the last major BSD release, can be traced to UNIX v7 by Bell Labs. 386BSD was forked from the 4.4BSD-lite code, and NetBSD and FreeBSD broke off there, and from there, DragonFlyBSD and MidnightBSD broke off FreeBSD, and OpenBSD off NetBSD
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