Table:
text: List of dual-code rugby internationals
Australia
Australia
Player Test_debut Year_ Cross_code_debut Date_ Position_
Trevor Allan RU Test Aust v New Zealand 1949 RL Test Other Nats 1950 ? Back
Ken Kearney 1st RU Test v New Zealand 1947 3rd RL Test v Great Britain 13 Dec 1952 Hooker
Rex Mossop 1st RU Test v New Zealand 1949 1st RL Test v Great Britain 14 June 1958 Forward
Arthur Summons 1st RU Test v Wales 1958 1st RL Test v New Zealand 1 July 1961 Half-back
Michael Cleary RU Test v France 1961 1st RL Test v Great Britain 9 June 1962 Winger
Jim Lisle 1st RU Test v Fiji 1961 3rd RL Test v Great Britain 14 July 1962 Five-eighth

text: List of dual-code rugby internationals
Australia
Australia
Player Test_debut Year_ Cross_code_debut Date_ Position_
Dick Thornett RU Test v France 1961 1st RL Test v South Africa 20 July 1963 Forward
Kevin Ryan RU Test v England 1958 2nd RL Test v France 4 July 1964 Forward
Bob Honan 1st RU Test v New Zealand 1964 1st RL Test v New Zealand 1 June 1969 Back
Phil Hawthorne 3rd RU Test v New Zealand 1962 1st RL Test v Great Britain 6 June 1970 Five-eighth
John Brass 2nd RU Test v British Lions 1966 1st RL Test v Great Britain 6 June 1970 Centre
Stephen Knight 2nd RU Test v South Africa 1969 RLWC v Great Britain 29 Oct 1972 Winger

Question: What is the post-1958 cross-code debut for Dick Thornett in Australia's dual-code rugby internationals list?