Geology Formula 17/100 #earthscience #spgeology

In this video, we discuss Echinoidea, an important class of echinoderms that includes sea urchins, sand dollars, and heart urchins. Learn about their morphology, classification, symmetry, habitat, evolution, and fossil significance with simple explanations and diagrams. This lecture is useful for: IIT JAM Geology GATE Geology CSIR NET UPSC Geology B.Sc. & M.Sc. Geology/Zoology Paleontology students Topics Covered: Introduction to Echinoidea General characteristics Regular vs irregular echinoids Test structure and symmetry Ambulacral and interambulacral areas Spine and tube feet Geological and fossil importance Classification and examples 📚 Perfect for competitive exams and university-level paleontology studies. #Echinoidea #SeaUrchin #Paleontology #Echinodermata #InvertebratePaleontology #Geology #Fossils #Zoology #IITJAM #GATEGeology #CSIRNET

In this video, we discuss Pelecypoda (Bivalvia) and Gastropoda, two important classes of the phylum Mollusca. Learn about their shell structure, morphology, habitat, mode of life, evolution, and important examples with easy explanations. This lecture is useful for: IIT JAM Geology GATE Geology CSIR NET UPSC Geology B.Sc. & M.Sc. Geology/Zoology Paleontology students Topics Covered: Introduction to Mollusca Characteristics of Pelecypoda Characteristics of Gastropoda Shell morphology Mode of life and habitat Fossil importance Differences between Pelecypoda and Gastropoda Important examples 📚 Perfect for competitive exams and university studies. #Pelecypoda #Gastropoda #Mollusca #Paleontology #InvertebratePaleontology #Geology #Bivalvia #Fossils #Zoology #IITJAM #GATEGeology #CSIRNET