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Echinoidea taxon detailsAustralidiadema alexanderi Smith & Crame, 2012 †
608170 (urn:lsid:marinespecies.org:taxname:608170)
accepted
Species
marine,
fossil only
Smith, A. B. & Crame, J. A. 2012. Echinoderm faunas from the Lower Cretaceous (Aptian-Albian) of Alexander Island, Antarctica. Palaeontology 55, 305-324., available online at https://doi.org/10.1111/j.1475-4983.2012.01129.x
page(s): 313-316; figs 5A-B, 6A-D, 7D, 7E, 8B [details]
Note Keystone Cliffs and Fossil Bluff, Alexander...
Etymology After Alexander Island, where the material comes from.
Etymology After Alexander Island, where the material comes from. [details] Fossil range Aptian
Fossil range Aptian [details] Stratigraphy Pluto Glacier Formation, Fossil Bluff Group
Stratigraphy Pluto Glacier Formation, Fossil Bluff Group [details]
Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Australidiadema alexanderi Smith & Crame, 2012 †. Accessed at: http://www.marinespecies.org/Echinoidea/aphia.php?p=taxdetails&id=608170 on 2024-09-23
Date action by
original description
Smith, A. B. & Crame, J. A. 2012. Echinoderm faunas from the Lower Cretaceous (Aptian-Albian) of Alexander Island, Antarctica. Palaeontology 55, 305-324., available online at https://doi.org/10.1111/j.1475-4983.2012.01129.x
page(s): 313-316; figs 5A-B, 6A-D, 7D, 7E, 8B [details] From editor or global species database
Diagnosis Test thin-plated; weakly imbricate especially adapically; interambulacral plates with primary tubercle and smaller adradial secondary tubercle on ambital plates. On adoral plates, primary and flanking secondary tubercles are almost the same size, while adapically a single large primary tubercle dominates. Spines nonverticillate but with a fine, transverse, anatomising sculpture. [details]Etymology After Alexander Island, where the material comes from. [details] Fossil range Aptian [details] Stratigraphy Pluto Glacier Formation, Fossil Bluff Group [details] Type locality Keystone Cliffs and Fossil Bluff, Alexander Island, Antarctica [details] Type material British Antarctic Survey (BAS) HT: BAS KG.1681.14 [part & counterpart]; PT: BAS KG.1681.15, KG.1743.23b, KG.1744.38 [details] |
