Because of their diminutive size, these members of the family Hylobatidae are also referred to as the "lesser apes." Study 40 Chapter 9- InQuzitive Quiz flashcards from Jessica L. on StudyBlue. Skeletal Features Related to Teeth and Snout. Vision among vertebrates is a result of having specialized light receptor structures known as rods and cones at the back of the eye in the retina. Study 35 Chapter 6- InQuizitive Quiz flashcards from Jessica L. on StudyBlue. It is the type specimen and the only known example of Darwinius masillae, a species assigned to the Which specific term describes teeth with two ridges, as found in Old World-monkey molars? PRIMATE COLOR VISION. Match each trait with the primate group in which it appears (strepsirhines or haplorhines). In your primate anatomy lab you are shown the mandible (lower jaw bone) of a species of primate. ). In your lab book you note: 1. that this is likely the lower jaw of a human due to the potential presence of a … Note: The primate characterisitics below are drawn mainly from Falk's Primate Diversity, with additional information from Fleagle's Primate Adaptation and Evolution. Strepsirhines have specialized diets, behaviors, and adaptations, such as the Sunda slow loris with its toxic bite. Males in the biggest gibbon species, known as s iamangs, are up to 30 pounds (13.5 kg. The Colobinae are herbivorous and have sacculated stomachs as well as elongated intestines that efficiently process leaves high in difficult to digest cellulose. Shortened snout. The Cercopithecinae have ischial callosities, cheek pouches, and are omnivorous. Primates rely less on their sense of smell and more on vision. in weight. The primate-like mammals do not seem to have played an important role in the general transformation of terrestrial animal life immediately following the massive global extinctions of plants and animals that occurred about 65,500,000 years ago. The smallest and the most arboreal apes are the 12-13 species of gibbons. Ida, (Darwinius masillae), nickname for the remarkably complete but nearly two-dimensional skeleton of an adapiform primate dating to the middle Eocene Epoch (approximately 47 million years ago). Strepsirhines retain more primitive characteristics, such as the rhinarium, which gives them a heightened sense of smell. ... no opposable thumbs and big toes for grasping, no postorbital bar, non, converging eye orbits, highly specialized teeth. Primate a. teeth are generalized because primates are omnivorous b. teeth are specialized for processing one type of food c. premolars and molars are indistinguishable from those found in carnivores d. tooth form is not correlated with their diet e. none of these The Old World monkeys are divided into two subfamilies. While looking at the teeth you notice a large space between the canine and first premolar. Your teeth and the structure of your mouth play important roles in your ability to eat, speak, and stay healthy. Haplorhines: 1. bigger brains. tall standing upright and 1 2-20 pounds (5.5-9 kg.) Why? Rods are extremely sensitive to even dim light but provide relatively coarse, colorless images. The 4 Types of Teeth and How They Function. Unique primate traits arose as adaptations for preying on insects and other small animals. Most a dult gibbons are only about 3 feet (90 cm.)