FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA
We describe an isolated, almost complete pedal ungual phalanx from the Middle Jurassic marine carbonate rocks of the Jaisalmer Basin, Rajasthan, north-western India. The ungual bone is triangular shaped, pointed, elongated, asymmetrical, dorsoventrally compressed, ventrally flat, bearing a shallow...
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| Format: | Article |
| Language: | English |
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Milano University Press
2023-10-01
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| Series: | Rivista Italiana di Paleontologia e Stratigrafia |
| Subjects: | |
| Online Access: | https://riviste.unimi.it/index.php/RIPS/article/view/20032 |
| _version_ | 1797648056228773888 |
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| author | Archana Sharma FERNANDO E. NOVAS SANJAY SINGH |
| author_facet | Archana Sharma FERNANDO E. NOVAS SANJAY SINGH |
| author_sort | Archana Sharma |
| collection | DOAJ |
| description |
We describe an isolated, almost complete pedal ungual phalanx from the Middle Jurassic marine carbonate rocks of the Jaisalmer Basin, Rajasthan, north-western India. The ungual bone is triangular shaped, pointed, elongated, asymmetrical, dorsoventrally compressed, ventrally flat, bearing a shallow semi-circular excavation, and almost straight in lateral view. The morphological features, as well as its proportions closely resemble the pedal ungual phalanges of spinosaurid theropods, presently known dominantly from the Cretaceous. The affinity to spinosaurids is supported by bivariate and multivariate analyses. The ungual phalanx is tentatively identified as a basally branching Jurassic spinosaurid under Megalosauroidea. Considering the stratigraphical and geographical provenances, this contribution may represent the oldest record of a spinosaurid.
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| first_indexed | 2024-03-11T15:26:36Z |
| format | Article |
| id | doaj.art-ced5b34ec3914e37b4801895ab179c9c |
| institution | Directory Open Access Journal |
| issn | 0035-6883 2039-4942 |
| language | English |
| last_indexed | 2024-03-11T15:26:36Z |
| publishDate | 2023-10-01 |
| publisher | Milano University Press |
| record_format | Article |
| series | Rivista Italiana di Paleontologia e Stratigrafia |
| spelling | doaj.art-ced5b34ec3914e37b4801895ab179c9c2023-10-27T15:24:57ZengMilano University PressRivista Italiana di Paleontologia e Stratigrafia0035-68832039-49422023-10-01129310.54103/2039-4942/20032FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIAArchana Sharma0FERNANDO E. NOVAS1SANJAY SINGH2Geological Survey of IndiaLaboratorio de Anatomía Comparada y Evolución de los Vertebrados CONICET–Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Buenos Aires, ArgentinaGeological Survey of India We describe an isolated, almost complete pedal ungual phalanx from the Middle Jurassic marine carbonate rocks of the Jaisalmer Basin, Rajasthan, north-western India. The ungual bone is triangular shaped, pointed, elongated, asymmetrical, dorsoventrally compressed, ventrally flat, bearing a shallow semi-circular excavation, and almost straight in lateral view. The morphological features, as well as its proportions closely resemble the pedal ungual phalanges of spinosaurid theropods, presently known dominantly from the Cretaceous. The affinity to spinosaurids is supported by bivariate and multivariate analyses. The ungual phalanx is tentatively identified as a basally branching Jurassic spinosaurid under Megalosauroidea. Considering the stratigraphical and geographical provenances, this contribution may represent the oldest record of a spinosaurid. https://riviste.unimi.it/index.php/RIPS/article/view/20032Pedal ungual phalanx; Spinosauridae; Jaisalmer Basin; Middle Jurassic; Bathonian; Eastern Gondwana. |
| spellingShingle | Archana Sharma FERNANDO E. NOVAS SANJAY SINGH FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA Rivista Italiana di Paleontologia e Stratigrafia Pedal ungual phalanx; Spinosauridae; Jaisalmer Basin; Middle Jurassic; Bathonian; Eastern Gondwana. |
| title | FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA |
| title_full | FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA |
| title_fullStr | FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA |
| title_full_unstemmed | FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA |
| title_short | FIRST JURASSIC EVIDENCE OF A POSSIBLE SPINOSAURID PEDAL UNGUAL, FROM THE JAISALMER BASIN, INDIA |
| title_sort | first jurassic evidence of a possible spinosaurid pedal ungual from the jaisalmer basin india |
| topic | Pedal ungual phalanx; Spinosauridae; Jaisalmer Basin; Middle Jurassic; Bathonian; Eastern Gondwana. |
| url | https://riviste.unimi.it/index.php/RIPS/article/view/20032 |
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