LU YEN-HAO - the ontogeny of Hanchungolithus multiseriatus (Endo) and Ningkianolithus welleri (Endo), with a brief note on the classification of the Trinucleidae.

1963. Acta Palaeontologica Sinica XI-3; pp. 319-342 in Chinese with English summary pp. 338-39, 3 plts. h.t. with English captions as well. Orig. wrps. with libr. stamp and tape, contents very good.

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