First Permian occurrence of the shark egg capsule morphotype Palaeoxyris Brongniart, 1828. Fischer,
S. Voigt, H. Kerp, J. W.
Schneider, and F. Scholze. 2016. First Permian occurrence of the shark
First Permian occurrence of the shark egg capsule morphotype Palaeoxyris Brongniart, 1828. Fischer,
S. Voigt, H. Kerp, J. W.
Schneider, and F. Scholze. 2016. First Permian occurrence of the shark
Permanental compound matrices and Schneider's theoremPermanental compound matrices and
Schneider's theorem