CHANGES IN THE CHALK HEART-URCHIN MICRASTER INTERPRETED IN RELATION TO LIVING FORMS

[21] JUKESBROWN AJ, 1904, MEM GEOL SURV UK

[22] A BIOMETRICAL STUDY OF MICRASTER-CORANGUINUM AND M (ISOMICRASTER) SENONENSIS [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1954, 237 (649) : 375 - &

[23] KERMACK KA, 1950, THESIS LONDON

[24] Kongiel R., 1949, Travaux du Service Geologique de la Pologne, V5, P1

[25] Lambert J., 1924, ESSAI NOMENCLATURE R

[26] LAMBERT J, 1901, RECHERCHES CRAIE S 1, P959

[27] Loven S., 1874, KONGELIGE SVENSKA VE, V11, P1, DOI DOI 10.5962/BHL.TITLE.39607

[28] Lov┬u┬n S., 1883, KONGL VET AKAD HANDL, V19, P1

[29] An ancestral habit in a sea-urchin [J]. NATURE, 1935, 135 : 995 - 995

[30] MOORE HILARY B., 1936, JOUR MARINE BIOL ASSOC UNITED KINGDOM, V20, P655

[21] JUKESBROWN AJ, 1904, MEM GEOL SURV UK

[22] A BIOMETRICAL STUDY OF MICRASTER-CORANGUINUM AND M (ISOMICRASTER) SENONENSIS [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1954, 237 (649) : 375 - &

[23] KERMACK KA, 1950, THESIS LONDON

[24] Kongiel R., 1949, Travaux du Service Geologique de la Pologne, V5, P1

[25] Lambert J., 1924, ESSAI NOMENCLATURE R

[26] LAMBERT J, 1901, RECHERCHES CRAIE S 1, P959

[27] Loven S., 1874, KONGELIGE SVENSKA VE, V11, P1, DOI DOI 10.5962/BHL.TITLE.39607

[28] Lov┬u┬n S., 1883, KONGL VET AKAD HANDL, V19, P1

[29] An ancestral habit in a sea-urchin [J]. NATURE, 1935, 135 : 995 - 995

[30] MOORE HILARY B., 1936, JOUR MARINE BIOL ASSOC UNITED KINGDOM, V20, P655