Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil)
ungual phalanxes of recent crocodylomorphs are modifiedinto queratin covered claws. They are conical, ventrally curved with asharp distal end. They are used during locomotion, digging and femalesizing on copula. Nevertheless, fossil crocodylomorphs claws present awider morphological and functional d...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Rio de Janeiro
2004-01-01
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| Series: | Anuário do Instituto de Geociências |
| Subjects: | |
| Online Access: | http://www.anuario.igeo.ufrj.br/anuario_2004/anuario_igeo_2004_falanges.pdf |
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| author | Ismar de Souza Carvalho João Tadeu Arruda Oscar Rocha-Barbosa Felipe Mesquita de Vasconcellos |
| author_facet | Ismar de Souza Carvalho João Tadeu Arruda Oscar Rocha-Barbosa Felipe Mesquita de Vasconcellos |
| author_sort | Ismar de Souza Carvalho |
| collection | DOAJ |
| description | ungual phalanxes of recent crocodylomorphs are modifiedinto queratin covered claws. They are conical, ventrally curved with asharp distal end. They are used during locomotion, digging and femalesizing on copula. Nevertheless, fossil crocodylomorphs claws present awider morphological and functional diversity. It was analysed fossil clawsfrom the Late Cretaceous rocks of Adamantina (General Salgado County)and Marília (Uberaba County) Formations of the Bauru Basin. Theclaws found in the Adamantina Formation were associated with skeletalremains of a baurusuchid. They are laterally compressed, more ventrallycurved and stronger than those of recent crocodylomorphs. They alsopresent, at their base, many furrows related to muscle attachment. Theclaws found in the Marília Formation were associated to the remains ofa peirosaurid. They show a great lateral compression and a blade-likeventral edge. They also present a slight ventral curvature and strongfurrows in their base for muscle attachment. The morphological dataobtained from these claws allow the investigation of the autoecology ofthese Cretaceous crocodylomorphs. Keywords: ungual phalanxes of recent crocodylomorphs are modifiedinto queratin covered claws. They are conical, ventrally curved with asharp distal end. They are used during locomotion, digging and femalesizing on copula. Nevertheless, fossil crocodylomorphs claws present awider morphological and functional diversity. It was analysed fossil clawsfrom the Late Cretaceous rocks of Adamantina (General Salgado County)and Marília (Uberaba County) Formations of the Bauru Basin. Theclaws found in the Adamantina Formation were associated with skeletalremains of a baurusuchid. They are laterally compressed, more ventrallycurved and stronger than those of recent crocodylomorphs. They alsopresent, at their base, many furrows related to muscle attachment. Theclaws found in the Marília Formation were associated to the remains ofa peirosaurid. They show a great lateral compression and a blade-likeventral edge. They also present a slight ventral curvature and strongfurrows in their base for muscle attachment. The morphological dataobtained from these claws allow the investigation of the autoecology of these Cretaceous crocodylomorphs. |
| first_indexed | 2024-04-11T02:04:33Z |
| format | Article |
| id | doaj.art-8bc796a62a4a43e38e6d2aebbc71362a |
| institution | Directory Open Access Journal |
| issn | 0101-9759 |
| language | English |
| last_indexed | 2024-04-11T02:04:33Z |
| publishDate | 2004-01-01 |
| publisher | Universidade Federal do Rio de Janeiro |
| record_format | Article |
| series | Anuário do Instituto de Geociências |
| spelling | doaj.art-8bc796a62a4a43e38e6d2aebbc71362a2023-01-03T03:19:31ZengUniversidade Federal do Rio de JaneiroAnuário do Instituto de Geociências0101-97592004-01-01275363Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil)Ismar de Souza CarvalhoJoão Tadeu ArrudaOscar Rocha-BarbosaFelipe Mesquita de Vasconcellosungual phalanxes of recent crocodylomorphs are modifiedinto queratin covered claws. They are conical, ventrally curved with asharp distal end. They are used during locomotion, digging and femalesizing on copula. Nevertheless, fossil crocodylomorphs claws present awider morphological and functional diversity. It was analysed fossil clawsfrom the Late Cretaceous rocks of Adamantina (General Salgado County)and Marília (Uberaba County) Formations of the Bauru Basin. Theclaws found in the Adamantina Formation were associated with skeletalremains of a baurusuchid. They are laterally compressed, more ventrallycurved and stronger than those of recent crocodylomorphs. They alsopresent, at their base, many furrows related to muscle attachment. Theclaws found in the Marília Formation were associated to the remains ofa peirosaurid. They show a great lateral compression and a blade-likeventral edge. They also present a slight ventral curvature and strongfurrows in their base for muscle attachment. The morphological dataobtained from these claws allow the investigation of the autoecology ofthese Cretaceous crocodylomorphs. Keywords: ungual phalanxes of recent crocodylomorphs are modifiedinto queratin covered claws. They are conical, ventrally curved with asharp distal end. They are used during locomotion, digging and femalesizing on copula. Nevertheless, fossil crocodylomorphs claws present awider morphological and functional diversity. It was analysed fossil clawsfrom the Late Cretaceous rocks of Adamantina (General Salgado County)and Marília (Uberaba County) Formations of the Bauru Basin. Theclaws found in the Adamantina Formation were associated with skeletalremains of a baurusuchid. They are laterally compressed, more ventrallycurved and stronger than those of recent crocodylomorphs. They alsopresent, at their base, many furrows related to muscle attachment. Theclaws found in the Marília Formation were associated to the remains ofa peirosaurid. They show a great lateral compression and a blade-likeventral edge. They also present a slight ventral curvature and strongfurrows in their base for muscle attachment. The morphological dataobtained from these claws allow the investigation of the autoecology of these Cretaceous crocodylomorphs.http://www.anuario.igeo.ufrj.br/anuario_2004/anuario_igeo_2004_falanges.pdfUngual phalanxCrocodylomorphBauru BasinUpperCretaceous |
| spellingShingle | Ismar de Souza Carvalho João Tadeu Arruda Oscar Rocha-Barbosa Felipe Mesquita de Vasconcellos Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) Anuário do Instituto de Geociências Ungual phalanx Crocodylomorph Bauru Basin UpperCretaceous |
| title | Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) |
| title_full | Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) |
| title_fullStr | Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) |
| title_full_unstemmed | Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) |
| title_short | Falanges ungueais de crocodilomorfos da Bacia Bauru(Cretáceo Superior, Brasil) |
| title_sort | falanges ungueais de crocodilomorfos da bacia bauru cretaceo superior brasil |
| topic | Ungual phalanx Crocodylomorph Bauru Basin UpperCretaceous |
| url | http://www.anuario.igeo.ufrj.br/anuario_2004/anuario_igeo_2004_falanges.pdf |
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