TY - RPRT TI - Fossilized embryos are widespread but the record is temporally and taxonomically biased AU - P.C.J. Donoghue AU - A. Kouchinsky AU - Dieter Waloszek AU - S. Bengtson AU - X.-P. Dong AU - A.K. Val’Kov AU - J.A. Cunningham AU - J.E. Repetski PY - 2006 DO - 10.1111/j.1525-142x.2006.00093.x UR - https://pubs.usgs.gov/publication/70030238 ID - 70030238 ER -