| Original Usage: | Sphenoecium Chapman & Thomas, 1936 | |
|---|---|---|
| ранг: | Genus |
|
| правописание: | Spenoecium | |
| авторство: | Chapman & Thomas | |
| публикация: | Graptolite (Hemichordata, Pterobranchia) preservation and identification in the Cambrian Series 3. Palaeontology. | |
| страница: | ||
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