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Titolo:
Histomorphogenesis of embryos of Upper Jurassic Theropods from Lourinha (Portugal)
Autore:
de Ricqles, A; Mateus, O; Antunes, MT; Taquet, P;
Indirizzi:
Univ Paris 07, ER Format Squelettiques, UMR CNRS 8570, F-75251 Paris 05, France Univ Paris 07 Paris France 05 s, UMR CNRS 8570, F-75251 Paris 05, France Univ Paris 07, Coll France, F-75251 Paris, France Univ Paris 07 Paris France F-75251 7, Coll France, F-75251 Paris, France Univ Nova Lisboa, Fac Ciencias & Tecnol, Ctr Estudos Geol, P-2824114 Caparica, Portugal Univ Nova Lisboa Caparica Portugal P-2824114 -2824114 Caparica, Portugal GEAL, Museu Lourinha, P-2530 Lourinha, Portugal GEAL Lourinha Portugal P-2530 Museu Lourinha, P-2530 Lourinha, Portugal Acad Ciencias Lisboa, Lisbon, Portugal Acad Ciencias Lisboa Lisbon Portugal Ciencias Lisboa, Lisbon, Portugal Museum Natl Hist Nat, Inst Paleontol, UMR CNRS 8569, F-75005 Paris, FranceMuseum Natl Hist Nat Paris France F-75005 RS 8569, F-75005 Paris, France
Titolo Testata:
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DELA TERRE ET DES PLANETES
fascicolo: 10, volume: 332, anno: 2001,
pagine: 647 - 656
SICI:
1251-8050(200105)332:10<647:HOEOUJ>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH-RATES; PERIOSTEAL BONE; LONG BONES; DINOSAURS; EVOLUTION; BIRDS;
Keywords:
histology and bone growth dynamics; dinosaurs; Theropods; embryos; Jurassic;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: de Ricqles, A Univ Paris 07, ER Format Squelettiques, UMR CNRS 8570, Case 7077,2 Pl Jussieu, F-75251 Paris 05, France Univ Paris 07 Case 7077,2 Pl Jussieu Paris France 05 France
Citazione:
A. de Ricqles et al., "Histomorphogenesis of embryos of Upper Jurassic Theropods from Lourinha (Portugal)", CR AC S IIA, 332(10), 2001, pp. 647-656

Abstract

Remains of dinosaurian embryos, hatchlings and early juveniles are currently the subject of increasing interest, as new discoveries and techniques now allow to analyse palaeobiological subjects such as growth and life history strategies of dinosaurs. So far, available 'embryonic' material mainly involved Ornithopods and some Theropods of Upper Cretaceous age. We describe here the histology of several bones (vertebrae, limb bones) from the tiny but exceptionally well preserved in ovo remains of Upper Jurassic Theropod dinosaurs from the Paimogo locality near Lourinha (Portugal). This Jurassic material allows to extend in time and to considerably supplement in great details our knowledge of early phases of growth in diameter and in length ofendoskeletal bones of various shape, as well as shape modelling among carnivorous dinosaurs. Endochondral ossification in both short and long bones involves extensive pads of calcified cartilages permeated by marrow buds. Wediscuss the likely occurrence of genuine cartilage canals in dinosaurs andof an avian-like 'medullary cartilaginous cone' in Theropods, :Patterns ofperiosteal ossification suggest high initial growth rates (20 mum . day(-1) or more), at once modulated by precise and locally specific changes in rates of new bone deposition. The resulting very precise shape modelling appears to start early and to involve at once some biomechanical components. (C) 2001 Academie des sciences / Editions scientifiques et medicales ElsevierSAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 07:04:47