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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
Micrhystridium Micrhystridium stellatum Nd Early Ludlovian
Micrhystridium Micrhystridium parinconspicuum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium granulatispinosum Nd Early Ludlovian
Veryhachium Veryhachium trispinosum Nd Early Ludlovian
Veryhachium Veryhachium wenlockium Nd Early Ludlovian
Ancyrochitina Ancyrochitina ancyrea Nd Early Ludlovian
Sphaerochitina Sphaerochitina sphaerocephala Nd Early Ludlovian
Micrhystridium Micrhystridium imitatum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium longispinosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium robustispinosum Nd Early Ludlovian
Baltisphaeridium Baltisphaeridium microcladum Nd Early Ludlovian
Conochitina Conochitina tuba Nd Early Ludlovian
Micrhystridium Micrhystridium nannacanthum Nd Early Ludlovian
Micrhystridium Micrhystridium shinetonense Nd Early Ludlovian
Conochitina Conochitina intermedia Nd Early Ludlovian
Ancyrochitina Ancyrochitina primitiva Nd Early Ludlovian
Punctatisporites Punctatisporites dilutus Nd Early Ludlovian