Flashcards

Archosaura

An G English 24 cards

Cards in this deck (24)

1—Crocodylidae
distinctive fourth mandibular tooth, visible from the side of the closed mouth
2—Alligatoridae
● The teeth of the lower jaw fit into pits in the upper jaw and thus cannot be seen when the mouth is closed
3—Struthioniformes
● Have only two toes on each pes, a robust third digit which bears a claw, and more gracile fourth digit (without a claw)
ostriches
4—Casuariiformes
○ The pes has three digits, with a large, hooked claw on digit two. This digit is used for intraspecific combat and self defense.
5—Anseriformes
palmate feet and keratin tooth-like structures along the lateral edges of the bill (used for grazing on land)
6—Galliformes
short, elliptical wings and relatively short, robust legs
● Digits are strongly built and all are strong runners
7—Procellariformes
● Wing shape is a high aspect ratio and for use of dynamic soaring is common
8—Pelicaniformes
piscivorous birds with totipalmate feet
9—Sphenisciformes
penguins
● Fusiform body and wings have become paddle-shaped for propulsion in water.
10—Gaviiformes
● Feet are palmate and the legs are located far back on the body
● They can ride low in the water and are able to sink out of sight by altering their specific gravity
11—Podicipediformes
diving birds with strong legs, elongate body, and an extremely short tail. Feet are lobate.
12—Ciconiiformes
● Digit 3 has a pectinate claw, and the hallux is not elevated
13—Gruiformes
● Lack a true crop - The crop is a muscular pouch located in a bird's neck above the top of the chest or sternum. It is simply an enlargement of the esophagus in this location. The crop functions as a storage place for food
14—Gruiformes
● Lack a true crop - The crop is a muscular pouch located in a bird's neck above the top of the chest or sternum. It is simply an enlargement of the esophagus in this location. The crop functions as a storage place for food
15—Columbiformes
● Small-headed, short-legged, plump-bodied birds
● Their heads bob as they walk
16—Falconiformes
● In falcons and caracars, the hooked beak is further modified by the presence of a well-developed tomial tooth, used in dispatching prey.
17—Strigiformes
● Powerful feet used to capture and dispatch prey. The fourth tow can be swung around to permit either anisodactyly or zygodactyly
18—Caprimulgiformes
● Bill is encircled by many bristles
19—Apodiformes
smallest birds
20—Psittaciformes
● Wings are elliptical and feet are zygodactylous.
● Stout hooked bills that tend to be deep and narrow. Cranium exhibits prokinesis (upper beak is hinged with the brain case)
21—Cuculiformes
● Long tail rectrices and zygodactylous feet
22—Coraciiformes
● Often large, heavy, prominent bills. Atlas and axis fused together
23—Piciformes
○ Tongue wraps around the back of the cranium to connect with the hyoid bones
24—Passeriformes
● Unwebbed anisodactylus feet with specializations for perching. Locking tendons -- the weight of their body is enough to cause tendons to wrap