Guianan Toucanet was created in 1827.

Blue-throated Toucanet was created in 1854.

Crimson-rumped Toucanet was created in 1835.

Toco toucan is a specific species of toucan, whereas "toucan" is a collective name for the entire family of toucan. Toco Toucans are the largest and probably the best known species within the toucan family. Toucan is the name for a type of birds, all belonging to the family Ramphastidae. There are five different genera within this family, with about 40 different species in total. These genera are: Genus Aulacorhynchus - These are the green toucanets. There are 6 to 13 species, depending of the taxonomy. This genus includes: * Blue-banded Toucanet * Chestnut-tipped Toucanet * Crimson-rumped Toucanet * Yellow-browed Toucanet * Emerald Toucanet

* Wagler's Toucanet * Blue-throated Toucanet * Violet-throated or Nelson's Toucanet * Santa Marta Toucanet * North Andean Toucanet * Black-throated or Peruvian Toucanet

* Groove-billed Toucanet * Yellow-billed Toucanet

Genus Selenidera - These are the dichromatic toucanets. There are 6 species in the genus. These are: * Guianan Toucanet * Tawny-tufted Toucanet * Gold-collared Toucanet * Langsdorff's Toucanet (also known as the Green-billed Toucanet)

* Gould's Toucanet * Spot-billed Toucanet * Yellow-eared Toucanet Genus Andigena - These are the mountain toucans. There are 4 species in this genus. These are: * Grey-breasted Mountain-toucan * Hooded Mountain-toucan * Plate-billed Mountain-toucan * Black-billed Mountain-toucan Genus Pteroglossus - These birds are known as araçaris. There are 14 species in this genus. These are: * Lettered Aracari * Green Aracari * Red-necked Aracari * Ivory-billed Aracari * Brown-mandibled Aracari * Chestnut-eared Aracari * Black-necked Aracari * Collared Aracari * Fiery-billed Aracari * Stripe-billed Aracari * Pale-mandibled Aracari * Many-banded Aracari * Curl-crested Aracari * Saffron Toucanet Genus Ramphastos - These are the typical toucans. There are around 10 species in this genus. These include: * Keel-billed Toucan * Choco Toucan * Channel-billed Toucan * Citron-throated Toucan * Ariel Toucan * Yellow-ridged Toucan

* Red-breasted Toucan * Chestnut-mandibled Toucan * Black-mandibled Toucan * White-throated Toucan * Red-billed Toucan * Cuvier's Toucan

* Toco Toucan

Toucans are in:

Kingdom: Animalia

Phylum: Chordata

Class: Aves

Order: Piciformes

Family: Ramphastidae

(wikipedia is my source for the above)

Toucans are a family of birds, also known as ramphastids and within that family there are several genus, and within each genus there are several species.

The five toucan genus (and some examples of species of toucans) are:

Aulacorhynchus - the green toucanets, such as the emerald toucanet

Selenidera - the often called dichromatic toucanets such as the Guyana toucanet

Andigena - the mountain toucans, including the plate-billed mountain toucan

Pteroglossus - the aracaris, including the green aracari

Ramphastos - the black toucans, including the toco toucan

In case you hear about there being six genus in family ramphastidae:

The saffron toucanet used to be placed in its own genus (Baillonius), so for a while there were believed to be six genus in family ramphastidae. It is now recognized that the saffron toucanet is in fact an aracari, and belongs in gneus Pteroglossus.