PFOOLEY Posted March 29, 2018 Author Share Posted March 29, 2018 From Saunders and Spinosa, 1978 (Sexual dimorphism in Nautilus from Palau): @Pilobolus @Auspex "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
PFOOLEY Posted March 30, 2018 Author Share Posted March 30, 2018 Will need to get this... Chapters "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
PFOOLEY Posted March 30, 2018 Author Share Posted March 30, 2018 Nautilus: biology, systematics, and paleobiology as viewed from 2015, (Ward,Dooley and Barord) "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
PFOOLEY Posted March 30, 2018 Author Share Posted March 30, 2018 Excerpt from Phylogeny and Evolution of the Mollusca... "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
PFOOLEY Posted June 21, 2018 Author Share Posted June 21, 2018 I was able to take some pictures of the specimen mentioned here... ...and figured I would add them here... ... . "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
PFOOLEY Posted October 29, 2018 Author Share Posted October 29, 2018 In my search for some confirmation on Angulithes as an identification for this Nautilus specimen, I reached out to RNDr. Jiří Frank, Ph.D. [National Museum (Prague)] regarding it and he had this to say... "...Could you please provide me a photo of dorsal and ventral view with measure? There is a close connection between genera Angulithes and Pseudocenoceras, but also with some representatives of very morphologically heterogeneous genus Cymatoceras. If we will be not only depending on the morphological features (often affected by deformations), this genus will be not valid any-more. But this is for long discussion and in my opinion, the shell surface (cask) morphology should not be the major taxonomic feature for determination. But back to your specimen, the combination of morphological features as shape of ventral size, suture line, size of phragmocone chambers are the major distinguish between two above mentioned genera. Indeed also the position of siphuncle, but I guess it is not preserved on this specimen. If you compare the whorl shape, it is important to also compare the size of the shale or determine the ontogenetic stadium, because it change during the ontogeny. So there is obvious morphological variation in some features during the ontogeny, specially the whorl shape on section. On the first glance Angulithes is a good direction..." ... ...onward. "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
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