Echinoidea name details
original description
Brünnich Nielsen, K. 1942. Martinosigra elongata, g. n. et sp. n. A new echinoid from the Ehite Chalk of Denmark. Meddelelser fra Dansk Geologisk Forening 10, 159-166. page(s): 163 [details] 
basis of record
Smith, A. B. & Kroh, A. (eds.). (2011). The Echinoid Directory. World Wide Web electronic publication., available online at http://www.nhm.ac.uk/research-curation/projects/echinoid-directory [details]
From editor or global species database
Etymology In honour of Dr. Th. Mortensen, the founder of the genus Echinosigra. [details]
From editor or global species database
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