THE JURASSIC IRREGULAR ECHINOID NUCLEOLITES CLUNICULARIS (SMITH) = L'ECHINOIDE IRREGULIER JURASSIQUE NUCLEOLITES CLUNICULARIS (SMITH)LEWIS DN; OWEN HG.1981; BULL. BR. MUS. (NAT. HIST.) GEOL. SERV.; ISSN 0007-1471; GBR; DA. 1981; VOL. 35; NO 3; PP. 189-194; BIBL. 7 REF.; ILL.Article

THE ENGLISH SILURIAN FOSSIL PLACOCYSTITES FORBESIANUS AND THE ANCESTRY OF THE VERTEBRATES.JEFFERIES RPS; LEWIS DN.1978; PHILOS. TRANS. R. SOC. LONDON; G.B.; DA. 1978; VOL. 282; NO 990; PP. 205-323; H.T. 5; BIBL. 4 P.; 40 ILL.Serial Issue