N. aldridgei is known from several incomplete fossils which suggest that, in life, it was a fairly large animal (when compared to other vetulicolians). The largest fossil is about 150 millimetres long, leading researchers to estimate that that individual was about 170 millimetres long. The exquisitely preserved fossils show that running the length inside the tail was a notochord, thereby demonstrating the animal's chordate affinities as being related to tunicates. The forebody, and overall form are similar to vetulicolids of Vetulicolidae, though, its researchers do not have confidence to place N. aldridgei within either Vetulicolid families Vetulicolidae, or Didazoonidae.
Etymologyedit
The genus name translates as "island swimmer" in reference to both its obvious adaptations for a nektonic lifestyle in the water column, and the great distance between Kangaroo Island and China, the primary center of vetulicolian diversity, even during Cambrian times. The specific name commemorates the efforts and memory of Richard "Dick" Aldridge for his crucial research in resolving vetulicolian affinities.
Referencesedit
^García-Bellido, Diego C; Paterson, John R (2014). "A new vetulicolian from Australia and its bearing on the chordate affinities of an enigmatic Cambrian group". BMC Evolutionary Biology. 14 (214): 214. doi:10.1186/s12862-014-0214-z. PMC4203957. PMID 25273382.
January 01, 1970
nesonektris, aldridgei, extinct, deuterostome, chordate, from, late, botomian, aged, shale, lagerstätte, kangaroo, island, australia, fourth, described, vetulicolian, that, restricted, maotianshan, shales, other, three, being, ooedigera, sirius, passet, banffi. Nesonektris aldridgei is an extinct deuterostome chordate from the Late Botomian aged Emu Bay Shale Lagerstatte 1 in Kangaroo Island Australia So far it is the fourth described vetulicolian that is not restricted to the Maotianshan Shales the other three being Ooedigera of Sirius Passet Banffia of the Burgess Shale and Skeemella of the Wheeler Shale NesonektrisTemporal range Late Botomian 517 Ma PreꞒ Ꞓ O S D C P T J K Pg N Artist s reconstruction Scientific classification Domain Eukaryota Kingdom Animalia Phylum Vetulicolia Class Vetulicolida Order Vetulicolata Family Didazoonidae Genus Nesonektris Species N aldridgei Binomial name Nesonektris aldridgeiGarcia Bellido et al 2014Anatomy edit nbsp Restoration N aldridgei is known from several incomplete fossils which suggest that in life it was a fairly large animal when compared to other vetulicolians The largest fossil is about 150 millimetres long leading researchers to estimate that that individual was about 170 millimetres long The exquisitely preserved fossils show that running the length inside the tail was a notochord thereby demonstrating the animal s chordate affinities as being related to tunicates The forebody and overall form are similar to vetulicolids of Vetulicolidae though its researchers do not have confidence to place N aldridgei within either Vetulicolid families Vetulicolidae or Didazoonidae Etymology editThe genus name translates as island swimmer in reference to both its obvious adaptations for a nektonic lifestyle in the water column and the great distance between Kangaroo Island and China the primary center of vetulicolian diversity even during Cambrian times The specific name commemorates the efforts and memory of Richard Dick Aldridge for his crucial research in resolving vetulicolian affinities References edit Garcia Bellido Diego C Paterson John R 2014 A new vetulicolian from Australia and its bearing on the chordate affinities of an enigmatic Cambrian group BMC Evolutionary Biology 14 214 214 doi 10 1186 s12862 014 0214 z PMC 4203957 PMID 25273382 Retrieved from https en wikipedia org w index php title Nesonektris amp oldid 1216939374, wikipedia, wiki, book, books, library,
