Encontrados 2 documentos, a visualizar página 1 de 1
Mapping the fern Blechnum heringeri (Blechnaceae, Polypodiopsida): recording th...
Santiago,Augusto César Pessôa; Moro,Marcelo Freire; Saraiva,Antonio Álamo Feitosa; Dittrich,Vinícius Antonio de OliveiraABSTRACT Blechnum heringeri Brade is an endemic species from Brazil previously considered vulnerable. Until recently, there was a very limited number of records for this species, all from the Cerrado Phytogeographical Domain in central Brazil. Subsequent studies have reported its occurrence in the rupestrian grasslands (campos rupestres) on the “cangas”, within the Amazonian Domain. Here we present the first re...
Estudo de coprólito da bacia sedimentar do Araripe por meios de espectroscopia ...
Lima,Ricardo Jorge Cruz; Freire,Paulo de Tarso Cavalcante; Sasaki,José Marcos; Saraiva,Antonio Álamo Feitosa; Lanfredi,SilvaniaCoprolites are fossilized faeces that constitute an important source of palaeobiological informations. This paper describes the characterization of some coprolite materials originated from the Romualdo Member of the Santana Formation (Araripe Basin, south of Ceará State in Brazil) by means of two techniques: X-ray powder diffraction and Fourier transform infrared spectroscopy (FT-IR). This characterization allo...