By Neil H. Landman, Richard Arnold Davis, Royal H. Mapes

This booklet brings jointly overseas scientists who specialise in present-day and fossil cephalopods, ranging largely from Paleozoic ammonoids to latest octopods. It covers systematics and evolution; difficult- and smooth half morphology; and ecology, biogeography, and taphonomy. The booklet additionally comprises new proof for the lifestyles of an ink sac in fossil ammonoids and lines the 1st checklist of an in-depth learn of octopus ecology in Alaska.

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Additional resources for Cephalopods Present and Past: New Insights and Fresh Perspectives

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The three families are all closely related phylogenetically, albeit of different taxonomic rank. Most workers have placed them within the same higher taxonomic group whether it be the superfamily Agoniatitacea (Miller, 1938), superfamily Anarcestaceae (Miller and Furnish, 1954; Petter, 1959; Erben, 1964b), suborder Agoniatitina (Bogoslovsky, 1969; House, 1981), order Anarcestida (Becker and House, 1994), or order Agoniatitida (Ruzhentsev, 1960, 1974; Becker and Kullmann, 1996; Korn, 2001; Korn and Klug, 2002).

X axis is the number of lirae space. Y axis is the measured distance between two lirae given in microns (mm). Data are given in Appendix 9. (C) Ratio of the ventral lirae space/dorsal lirae space (V/D) on the embryonic shell. Data are given in Appendix 8. (D) Ratio of the ventral lirae space/dorsal lirae space (V/D) on the postembryonic shell. Data are given in Appendix 9. chamber, seen most strongly in AMNH 50416 (Fig. 9a). The pattern of midflank distance parallels that of the ventral distance.

Data are given in Appendix 5. (C) Ratio of the ventral lirae space/dorsal lirae space (V/D) on the embryonic shell. Data are given in Appendix 4. (D) Ratio of the ventral lirae space/dorsal lirae space (V/D) on the postembryonic shell. Data are given in Appendix 5. 2 Anarcestidae Two specimens from the Anarcestidae were measured, both identified as Latanarcestes sp. (AMNH 46646 and AMNH 50416). The results are presented in 26 Klofak et al. 0 0 0 A 10 20 30 40 Lirae Space 50 60 0 10 Lirae Space Fig.

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