A tubercle at the anterior margin of the foramen magnum.
Lakhtakia
P K
PK
Department of Orthopaedic Surgery, King George's Medical College, Lucknow, U.P. India.
Premsagar
I C
IC
Bisaria
K K
KK
Bisaria
S D
SD
D000328:Adult; D005539:Foramen Magnum / Q000033:anatomy & histology*; D006801:Humans