Traits of Strepsirhines vs Haplorhines

What is a subdivision within the primate order that includes lemurs and lorises?

What is a subdivision within the primate order that includes tarsiers, New World monkeys, Old World monkeys, and apes?

Where do Strepsirhines live?

Where do Haplorhines live?

Which group has a tooth claw and grooming claw?

Which group has a Tapetum lucidum for night vision?

Strepsirhines have a post-orbital bar but no closure.

Haplorhines rely heavily on olfaction for smell.

Which group tends to have long snouts?

Which group relies heavily on scent and has scent glands?

Strepsirhines are primarily diurnal.

Strepsirhines have two halves of the mandible that are unfused.

Strepsirhines have small brains.

Strepsirhines are solitary species and thrive being alone.

Strepsirhines tend to be carnivores.

Haplorhines are typically non-nocturnal.

What is the only nocturnal Haplorhine?

Haplorhines rely heavily on vision.

Haplorhines have a post-orbital bar and closure.

Haplorhines have two halves of the mandible that are unfused.

Haplorhines have large brains.

Haplorhines tend to be more social.

Strepsirhines

Subdivision of the primate order, encompassing lemurs and lorises.
Primarily found in Africa and Asia.
Possess a tooth claw and grooming claw.
Feature a Tapetum lucidum, enhancing low-light vision.
Characterized by a post-orbital bar with no closure.
Rely on an olfactory bulb for the sense of smell.
Have long snouts, enabling better olfactory capabilities.
Utilize scent glands and depend heavily on scent for communication.
Mostly nocturnal, adapted to nighttime activity.
Possess unfused mandible halves.
Generally exhibit smaller brain sizes compared to haplorhines.
Many species are solitary, thriving alone in their habitats.
Mostly insectivorous, feeding primarily on insects.

Haplorhines

Subdivision of the primate order, including tarsiers, New World monkeys, Old World monkeys, and apes (including humans).
Their geographic range extends to Africa, Asia, South America, and Central America.
Largely non-nocturnal, with a few exceptions (e.g., night monkeys).
Heavily reliant on visual faculties for interaction with their environment.
Possess both a post-orbital bar and closure in the skull.
Feature fused mandible halves, contributing to a different jaw structure.
Generally have larger brains, providing advanced cognitive abilities.
Tend to be more social, often forming complex social structures.

Explore the key characteristics of Strepsirhines and Haplorhines, two major subdivisions of primates. This flashcard quiz will help you understand their unique traits and habitats, allowing for a deeper insight into evolutionary relationships within the primate order.