Evolution and Phylogeny of Pancrustacea: A Story of Scientific Method

Description

The scientific understanding of arthropod phylogeny and evolution has changed significantly in recent decades. One of the most momentous alterations involved crustaceans, which are not a monophyletc group, but are part of a larger group along with insects: Pancrustacea. The old ideas surrounding crustacean evolution have served scientists well for many years; it is now time to turn toward new research by embracing the results derived from investigations conducted largely within this century. For example, new definitions have arisen from sources across several fields of study, and Frederick R. Schram and Stefan Koenemann have created a book that explores paleobiodiversity and the diversity of modern body plans. Developments within ontogenetic studies continue to generate remarkable insights into crustaceomorph evolution in regard to patterns of embryology and a revolution in the application of development genetics. Phylogeny techniques of analysis and new sources of data derived from molecular sequencing and genetic studies have forced scientists to consider new hypotheses concerning the interrelationships of all the pancrustaceans, both the crustaceomorphs and Hexapoda. Yet, some fossil groups still remain enigmatic (Thylacocephala). Despite this, research into fossils (even if incompletely understood) fills in gaps of our knowledge of paleobiodiversity, and it's useful for many things, including analyzing the origin and early evolution of Hexapoda. Evolution and Phylogeny of Pancrustacea demonstrates the use of multiple alternative hypotheses and other techniques through the well-executed presentation of diverse data sources involving Pancrustacea. Readers are left with clues to great mysteries, including the possible pathways of evolution within marine arthropods. Cover Evolution and Phylogeny of Pancrustacea Copyright Contents Preface Acknowledgments Plate SECTION 1. 1. Body Plans 2. Segments and Body Regions 3. Development 4. Phylogeny and Classification 5. Bradoriida and Phosphatocopida SECTION 2.CLASS OLIGOSTRACA 6. Mystacocarida 7. Skaracarida 8. Branchiura 9. Pentastomida 10. Ostracoda SECTION 3.CLASS MULTICRUSTACEA: SUBCLASSHEXANAUPLIA 11. Copepoda 12. Ascothoracida 13. Acrothoracica 14. Rhizocephala 15. Thoracica 16. Tantulocarida 17. Facetotecta 18. Cyclida SECTION 4.CLASS MULTICRUSTACEA:SUBCLASS MALACOSTRACA 19. Phyllocarida 20. Stem Eumalacostracans? 21. Stomatopoda 22. Aeschronectida 23. Bathynellacea 24. Anaspidacea SECTION 4A.INFRACLASS EUMALACOSTRACA:SUPERORDER PERACARIDA 25. Mysida and Stygiomysida 26. Lophogastrida 27. Pygocephalomorpha 28. Mictacea 29. Spelaeogriphacea 30. Thermosbaenacea 31. Cumacea 32. Tanaidacea 33. Amphipoda and Ingolfiellida 34. Isopoda SECTION 4B.INFRACLASS EUMALACOSTRACA:SUPERORDER EUCARIDA 35. Euphausiacea 36. Dendrobranchiata 37. Procaridea 38. Caridea and Amphionides 39. Stenopodea 40. Reptantia SECTION 4C.INFRACLASS INFRACLASSTHYLACOCEPHALA 41. Thylacocephala SECTION 5.CLASS ALLOTRIOCARIDA: SUBCLASSBRANCHIOPODA 42. Anostraca 43. Lipostraca 44. Notostraca and Allies (Calmanostraca) 45. Clam Shrimp: Laevicaudata, Spinicaudata, and Cyclestheriida 46. Cladocera SECTION 6.CLASS ALLOTRIOCARIDA:SUBCLASS XENOCARIDA 47. Cephalocarida 48. Remipedia 49. Yicaris, Rehbachiella, and Allies 50. “Enantiopods”: Miscellaneous, Loose-​End Crustaceomorphs SECTION 7.CLASS ALLOTRIOCARIDA: SUBCLASSHEXAPODA 51. Pancrustacea: Evolution of Hexapoda and Other Arthropods Epilogue Appendix Focused Taxonomic Index Selected Subject Index