Maria Nazareth Ferreira da Silva is a zoologist from Manaus, Brazil
Da Silva has, for many years, specialised in the study of Amazonian mammals. She has described several new species of rodents:
She has written, and contributed to, many papers and articles on the subject, and currently works for the National Institute of Amazonian Research.
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The short-tailed spiny-rat or Huallaga spiny rat, is a spiny rat species found in Bolivia, Brazil, Colombia, Ecuador and Peru.
The Guyenne spiny-rat or Cayenne spiny rat, is a spiny rat species found in Brazil, Colombia, French Guiana, Guyana, Suriname and Venezuela.
Cuvier's spiny-rat is a spiny rat species found in Brazil, French Guiana, Guyana, Peru and Suriname.
The stiff-spine spiny-rat or Tefe spiny rat, is a spiny rat species found in Brazil and Colombia.
Gardner's spiny-rat is a spiny rat species found in Bolivia and Brazil.
Goeldi's spiny-rat is a spiny rat species found in Brazil.
The Guyanan spiny-rat is a spiny rat species found in Brazil, Guyana and Venezuela. The species was first described by George Henry Hamilton Tate in 1939.
The Kulina spiny-rat or Javari spiny rat, is a spiny rat species found in Brazil and Peru.
Roberto's spiny-rat or Para spiny rat, is a spiny rat species found in Brazil.
Patton's spiny-rat is a spiny rat species found in Brazil and Peru.
The Napo spiny rat is a spiny rat species found in Brazil, Colombia, Ecuador, Peru and Venezuela.
Simons's spiny rat is a spiny rat species found in Bolivia, Brazil, Colombia, Ecuador and Peru. It was named for American scientific collector Perry O. Simons.
Steere's spiny rat is a spiny rat species found in Bolivia, Brazil and Peru.
The Colombian spiny-rat is a species of rodent in the family Echimyidae. It is found in Colombia and Venezuela.
The Boyacá spiny rat is a species of rodent in the family Echimyidae. It is endemic to Colombia; it is found primary forest in Carare River valley, Boyacá Department, 100 to 500 meters above sea level. Nocturnal, terrestrial and solitary, it feeds on seeds, fruit and some leaves and insects. It is threatened by habitat loss for mining and agriculture.
The Pacific spiny rat is a species of rodent in the family Echimyidae. It is found in Ecuador and Peru.
The Guaira spiny-rat is a species of rodent in the family Echimyidae. It is endemic to Venezuela. It is commonly referred to as 'casiragua' to avoid confusion with true rats (Muroidea)
The Minca spiny rat is a species of rodent in the family Echimyidae. It is endemic to Colombia.
O'Connell's spiny-rat is a species of rodent in the family Echimyidae. It is endemic to Colombia.
The Trinidad spiny rat is a species of rodent in the family Echimyidae. It is found in Trinidad and Tobago and northern Venezuela.