Herdmania is a primitive and degenerate descendent of ancestral chordates. Explain. (UPSC 2015, 10 Marks, )

हर्डमैनिया पूर्वज कॉर्डेट्स का एक आदिम और पतित वंशज है। व्याख्या करें। (Herdmania is a primitive and degenerate descendent of ancestral chordates. Explain.)

Herdmania is a primitive and degenerate descendent of ancestral chordates. Explain. (UPSC 2015, 10 Marks, ) EN ह function dochangelang(val) { if (val != "") { window.location = val; } }

Herdmania is a primitive and degenerate descendent of ancestral chordates. Explain. (UPSC 2015, 10 Marks, )