Author:
Lister,T.R.;Downie,C.
Year:
1967
Title:
New evidence for the age of the primitive Echinoid Myriastiches gigas
Reference:
Lister,T.R. et al. (1967) New evidence for the age of the primitive Echinoid Myriastiches gigas Palaeontology Vol. 10 # 2 P. 171- 174
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Genus Species Country(Region) From To
Ancyrochitina Ancyrochitina ancyrea Nd Early Ludlovian
Ancyrochitina Ancyrochitina primitiva Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium arbusculiferum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium cariniosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium granulatispinosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium longispinosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium microcladum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium nanum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium ramusculosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium robustispinosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium wenlockense Nd Early Ludlovian
Conochitina Conochitina claviformis Nd Early Ludlovian
Conochitina Conochitina filifera Nd Early Ludlovian
Conochitina Conochitina intermedia Nd Early Ludlovian
Conochitina Conochitina lagenomorpha Nd Early Ludlovian
Conochitina Conochitina tuba Nd Early Ludlovian
Cymatiosphaera Cymatiosphaera wenlockia Nd Early Ludlovian