MAKE A MEME
View Large Image
| View Original: | Agnostus_pisiformis_fossil_trilobite_(Alum_Shale_Formation,_upper_Middle_Cambrian;_Honsater,_Vastergotland,_Sweden)_(15263805372).jpg (436x628) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Agnostus pisiformis fossil trilobite (Alum Shale Formation, upper Middle Cambrian; Honsater, Vastergotland, Sweden) (15263805372).jpg of Swedish Agnostus pisiformis fossils in his 1751 book Skånska Resa Travels in Scania He likened the disarticulated heads tails to compressed peas The species name pisiformis is Latin for pea-shaped In 1768 Linnaeus formally named these fossils using the system of scientific names that he invented in the 1750s Linnaeus referred to this fossil using the genus-species-subspecies name Entomolithus paradoxus pisiformis pea-shaped paradoxical stone insect Göran Wahlenberg described illustrated this species as Entomostracites pisiformis in his 1818 monograph Petrificata Telluris Svecanae Wahlenberg is often given credit for naming the species although Carl Linnaeus was the first to name it in 1768 This is Wahlenberg �s 1818 figure of Agnostus pisiformis from the Alum Shale Formation Cambrian of Västergötland Sweden The original figure is inverted Wahlenberg misidentified the head as the tail vice versa The cephalon head has been designated as the lectotype specimen for Agnostus pisiformis Wahlenberg 1818 plate 1 figure 5 The original specimen still exists as PMU Vg 819 housed at the Palaeontological Museum of the University of Uppsala Sweden and was figured by photograph in Reyment 1976 Wahlenberg himself collected this material on 8 July 1817 from Alum Shale Formation exposures at Hönsäter Västergötland Sweden Wahlenberg's original diagnosis of this species caecus hemisphaericus marginatus; fronte teretiuscula -------------- References cited arranged chronologically Bromell M 1729 Lithographiæ Svecanæ specimen II sectio II De animalibus fossilibus illorumque variis partibus petrificatis caput primum de lapidibus insectiferis tubulis vermicularibus articulus primus de lapidibus insectifieris Scanicis Gothicis Acta Literaria Sveciæ 2 493-497 524-533 Bromell M 1740 Mineralogia et Lithographica Svecana Stockholm and Leipzig G Kiesewetter 148 pp Linnaeus C 1747 Wästgöta Resa Stockholm Lars Salvius 303 pp 5 pls Linnaeus C 1751 Skånska Resa Stockholm Lars Salvius 467 pp Linnaeus C 1768 Systema Naturæ per Regna Tria Naturæ Secundum Classes Ordines Genera Species cum Characteribus Differentiis Editio Duodecima Reformata Tomus III Regnum Lapideum Stockholm Lars Salvius 256 pp 3 pls Wahlenberg G 1818 dated 1821 Petrificata telluris Svecanae Nova Acta Regiæ Societatis Scientiarum Upsaliensis 8 1-116 pls 1-4 Reyment R A 1976 Biographical note on Goran Georg Wahlenberg De Rebus in Palaeontologico Museo Upsaliensi Collectis Illustrated Catalogue of the Type Collections of the Palaeontological Museum of the University of Uppsala 3 1-11 https //www flickr com/photos/jsjgeology/15263805372/ Agnostus pisiformis fossil trilobite Alum Shale Formation upper Middle Cambrian; Honsater Vastergotland Sweden 2014-09-16 23 32 https //www flickr com/people/47445767 N05 James St John cc-by-2 0 jsj1771 http //flickr com/photos/47445767 N05/15263805372 2015-05-06 19 52 03 cc-by-2 0 PD-old-70-1923 Files from James St John Flickr stream Agnostus pisiformis | ||||
_(15263805372).jpg){kind=link}
