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| Registros recuperados: 13 | |
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| Otero,Alejandro; Vizcaíno,Sergio F.. |
| We present the reconstruction of the hindlimb musculature of the titanosaur sauropod Neuquensaurus australis (Lydekker), integrating data from crocodilians and birds as a phylogenetic bracket. First, we evaluate sites of origin and insertions in N. australis by comparison with extant archosaurs as well as with previous works on dinosaur soft anatomy, and reconstruct principal muscles of the leg, such as Triceps femoris group, M. iliofibularis, Mm. adductores femores, Mm. gastrocnemii, M. ischiotrochantericus and Mm. caudofemorales. Second, we infer the probable function of each muscle comparing with our bracket taxa and with living analogs, principally mammals, because they are thought to be the best model to understand non-avian dinosaur locomotion. This... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Archosauria; Extant Phylogenetic Bracket; Soft tissue; Functional morphology. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000200007 |
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| Dhellemmes, F.; Hansen, M. J.; Bouet, S. D.; Videler, J. J.; Domenici, P.; Steffensen, J. F.; Hildebrandt, T.; Fritsch, G.; Bach, Pascal; Sabarros, Philippe; Krüger, A.; Kurvers, R. H. J. M.; Krause, J.. |
| Billfishes are well known for their distinctive elongated rostra, i.e. bills. The functional significance of billfish rostra has been frequently discussed and the recent discovery of an oil gland (glandula oleofera) at the base of the rostrum in swordfish, Xiphias gladius, has added an interesting facet to this discussion regarding the potential co-evolution of gland and rostra. Here, we investigated the oil gland and oil pores (through which the oil is brought to the skin surface) of four billfish species – swordfish, Atlantic blue marlin (Makaira nigricans), Indo-Pacific sailfish (Istiophorus platypterus) and striped marlin (Kajikia audax) – and provide detailed evidence for the presence of an oil gland in the last three. All four species had a high... |
| Tipo: Text |
Palavras-chave: Comparative method; Functional morphology; Rostrum; Glandula oleofera; Rete lubricans; Fatty acids; Co-evolution. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76805/77973.pdf |
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| Ross, Arnold; Newman, William A.. |
| The coral-eating barnacle Hoekia monticulariae (Gray, 1831), the only internal parasite among the Thoracica described to this day, is characterized by an irregularly-shaped shell nestled cryptically between the polyps of the hermatypic coral Hydnophora Fischer, 1807, which occurs throughout most of the Indo-West Pacific. Because of its protean form, cirripedologists have failed to appreciate the diversity of taxa related to Hoekia, , a presumed monotypic genus. We describe seven new species divided between Hoekia and three new genera, Eohoekia, Parahoekia, and Ahoekia for which the Tribe Hoekiini is proposed. As in other pyrgomatids, calcareous overgrowth by the coral is inhibited around the edge of the wall and aperture. But in Hoekiini a pseudopolyp,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cirripedia; Pyrgomatidae; Hoekia; Coral-eating barnacles; New species; Parasitism; Functional morphology. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/504389 |
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| Nagel, D.; Hilsberg, S.; Benesch, A.; Scholz, J.. |
| According to caves drawings, male specimens of ice age cave lions lacked a mane. Ethological observations of the recent subspecies showed the significance of the mane of male lions (Panthera leo) in intraspecific social interaction. For the Pleistocene lion, there are two possible implications; the social system was different from the modern subspecies or the cooler climate did not allow the development of manes. Whereas the former can only be discussed, the latter is supported by evidence based on infrared thermography and considerations on thermoregulation. Thermal images of the recent subspecies clearly demonstrate the significance of mane development in terms of functional morphology. Probably, manes in felids can develop in warm climate only. The mane... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cave lion; Fur pattern; Functional morphology; Pleistocene; 42.84; 38.22. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/219302 |
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| Williams, R.B.. |
| The locomotory behaviour and functional morphology of English populations of a small (<2 cm long), burrowing athenarian sea anemone, Nematostella vectensis Stephenson, 1935 (= N. pellucida Crowell, 1946), which lives in soft mud in salt marshes and creeks, are described. Objectives were to ascertain the specific stimuli and environmental conditions determining when and how locomotion is employed, and to assess survival values. Experimentation and anatomical examination revealed how anemones move, and their functional morphology was interpreted in a physiological context. Finally, locomotion, morphology and habitat were compared for several athenarian anemones, to ascertain what correlations there are, if any. Essential environmental conditions for N.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Behaviour; Burrowing; Climbing; Creeping; England; Functional morphology; Locomotion; Musculature; Nematostella vectensis; Rugae; Sea anemones; 42.79. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/220581 |
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| Haug, C.; Haug, J.T.. |
| We describe a possible new defensive behaviour of larval stages of mantis shrimps (Stomatopoda). Mantis shrimp larvae are rarely observed in nature, thus the study is based on postures of museum material and functional morphological aspects. Specimens described here are tightly enrolled, their pleon is bent forward,and the telson is locked into the frontal margin of the shield. This margin has two lobes into which the two posterolateral spines of the telson fit. The shield shows further adaptions to enrolment; e.g., the ventral gape of the shield perfectly matches the width of the pleon and leaves no major gaps when the pleon is bent forward. Based on these observations, we briefly discuss the possibilities to infer behavioural aspects from functional... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Defensive behaviour; Functional morphology; Marine larvae; Museum material; 42.74. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/480045 |
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| Herman, J.; Hovestadt-Euler, M.; Hovestadt, D.C.; Stehmann, M.. |
| Part B, Nos. 1a and 1b of this series, comprising of the Batomorphii the first and the second sections on the Rajoidei, is continued with the last group of rajoid taxa as far as material was available. The tooth morphology of representatives of eleven more genera and subgenera, namely <i>Arhynchobatis, Bathyraja richardsoni-type, Cruriraja, Irolita, Notoraja, Pavoraja (Insentiraja), Pavoraja (Pavoraja), Pseudoraja, Raja (Atlantoraja), Raja (Okamejei)</i> and <i>Rhinoraja</i>, is described and illustrated by SEM-photographs. Differential diagnoses and systematic interpretations are presented as a result of the odontological examinations described here and in the previous two issues 1a and 1b for the supraspefic taxa of the Rajoidei. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional morphology; Marine fish; Taxonomy; Teeth; Rajiformes. |
| Ano: 1996 |
URL: http://www.vliz.be/imisdocs/publications/294448.pdf |
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| Registros recuperados: 13 | |
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