Olsen, Paul E.; Kent, Dennis V.; Whiteside, Jessica H. (2010). "Implications of the Newark Supergroup-based astrochronology and geomagnetic polarity time scale (Newark-APTS) for the tempo and mode of the early diversification of the Dinosauria". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 101 (3–4): 201–229. Bibcode:2010EESTR.101..201O. doi:10.1017/S1755691011020032. S2CID16123732.
Olsen, Paul E.; Kent, Dennis V.; Whiteside, Jessica H. (2010). "Implications of the Newark Supergroup-based astrochronology and geomagnetic polarity time scale (Newark-APTS) for the tempo and mode of the early diversification of the Dinosauria". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 101 (3–4): 201–229. Bibcode:2010EESTR.101..201O. doi:10.1017/S1755691011020032. S2CID16123732.
Olsen, Paul E.; Kent, Dennis V.; Whiteside, Jessica H. (2010). "Implications of the Newark Supergroup-based astrochronology and geomagnetic polarity time scale (Newark-APTS) for the tempo and mode of the early diversification of the Dinosauria". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 101 (3–4): 201–229. Bibcode:2010EESTR.101..201O. doi:10.1017/S1755691011020032. S2CID16123732.