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Let us learn about the comparison between lemuriformes, tarsiiformes and anthropoidea.
Comparison # Lemuriformes:
1. Distribution:
Madagascar, certain parts of Africa and South India.
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2. Habit:
Nocturnal.
3. Hairs:
Thickly coated
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4. Muzzle:
Elongated and pointed with a rhinarum at the tip.
5. Eyes:
Laterally placed.
6. Pinna:
Pointed
7. Plamar & Plantar surface:
Often with hairs.
8. Digital Tips:
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Provided with flat nail except the second digit of hind limb.
9. Tail:
Long , busy and non-prehensile.
10. Dental formula:
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2.1.3.3/2.1.3.3
11. Cranial capacity:
Small
12. Jugal:
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Extended back ward
13. Nasal:
Broad posteriorly.
14. Palate:
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Thickened at the posterior.
15. Orbit fossa:
Confluent with temporal fossa.
16. Lacrymal foramen:
Extra-orbital
17. Mandibular symphsis:
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Weak
18. Sacral vertebrae :
9
19. Thoracolumbar Vertebrae:
20-24
20. llia:
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Narrow and curved outside.
21. Epicondylar :
Present.
22. Third trochanter:
Present
23. Retia mirabilia:
Present.
24. Cerebrum:
Dose not cover the cerebellums.
25. Uteru:
Duplex
26. Placenta:
Diffused and indeciduate
27. Urethra:
Traverses the clitoris.
28. Sphincter colli:
Note developed
29. Examples:
Lemurs
Comparison # Tarsiifirmes:
1. Distribution:
Philippine
2. Habit:
Noctural.
3. Hair:
Thickly coated.
4. Muzzle:
Very short
5. Eyes:
Directed forward
6. Pinna:
Pointed with tuft of hairs
7. Palmar & Plantar Surface:
With scanty hairs.
8. Digital tips:
Bear flat nail except the second and third digits of the hind-limbs. Adhesive discs are present.
9. Tail:
Elongated with a tuft of hair at the tip. It is non – prehensile.
10. Dental Formula:
2.1.3.3/1.1.3.3
11. Cranial Capacity:
Large
12. Jugal:
Not so much extended backward
13. Nasal:
Narrower posteriorly
14. Palate:
No thickening
15. Orbit fossa:
Communicates with the temporal fossa by a wide fissure.
16. Lacrymal foramen:
Extra orbital
17. Mandibular symphsis:
Fairly developed
18. Sacral vertebrate:
5-6
19. Thoracolumbar bar vertebrae:
19
20. llia:
Broad and directed for- ward
21. Epicondylar foramen:
Present
22. Third trochanter:
Absent
23. Retia mirabilia:
Present
20. Cerebrum:
Does not cover the cerebellum
25. Uterus:
Biornute
26. Placenta:
Metadiscoidal and haemochorial
27. Urethra:
Clitoris is not traversed by urethra
28. Sphincter coil:
Present and developed to express emotional signs in the face.
29. Examples:
New world and Old world monkeys, Macaca, Ateles gorilla homospiens.
Comparison # Anthropoidea:
1. Distribution:
Cosmopolitan
2. Habit:
Not usually nocturnal.
3. Hairs:
Scanty
4. Muzzle:
Very short
5. Eyes:
Directed forward
6. Pinna:
Rounded
7. Palmer& Plantar surface:
With hairs
8. Digital tips:
Provided with flat nail except the seconds digit of the hind limb of hapalidae
9. Tail:
It present, prehensile.
10. Dental formula:
2.1.2.3/2.1.2.3
11.Cranial capacity:
Large
12. Jugal:
Not extended at all.
13. Nasal:
Narrow posteriorly
14. Palate:
No thickening.
15. Orbital fossa:
Separated by a bony partition from the temporal
16. Lacrymal foramen:
Infraorbital.
17. Mandibular symphsis:
Strongly developed.
18. Sacral Vertebrae:
4-5
19.Thoracolumbar vertebrate:
16-20
20. llia:
Broad
21. Epicondylar Foramen:
Absent.
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22. Third trochanter:
Absent
24. Cerebrum:
Covers the cerebellum
25. Urethra:
Simplex
26. Placenta:
Meta-discoidal and haemochorial
27. Urethra:
Clitoris is not developed to express emotional signs in the face
28. Sphincter colli:
Present and developed to express emotional signs in the face.
29. Examples:
New world and old world monkeys Macaca, Ateles, Gorilla, Homospiens.
