Consequence 发表于 2025-3-27 00:32:52

Comparative Analysis of Some Morphometric Characters in Two Sepiolids: , (NAEF, 1916) and , (Orbigny992; Bello, 1995). The only difference referred to by Naef (1923) is that the tentacles of . are smaller than those of . and bear much smaller suckers. However this is evident only when specimens of equal size from the two species are examined together. The purpose of this paper is to verify whether

exacerbate 发表于 2025-3-27 04:25:41

http://reply.papertrans.cn/16/1504/150371/150371_32.png

cutlery 发表于 2025-3-27 08:50:05

http://reply.papertrans.cn/16/1504/150371/150371_33.png

BILE 发表于 2025-3-27 10:45:53

Plasticity of Developmental Timing as the Underlying Cause of High Speciation Rates in Ammonoidsology among taxa are due to small changes in developmental timing, and an unusually high number of progenic dwarf spinoff taxa occur in this clade, indicating that larger-scale changes in ontogenetic timing are also common. It seems, then, that the developmental program of this ammonite clade was ex

Presbyopia 发表于 2025-3-27 17:40:33

Pathologic Gigantism in Middle Carboniferous Cephalopods, Southern Midcontinent, United Statesre dominated by ammonoids in unusual abundance. These assemblages represent single horizons and localities where most individuals of a species are of strikingly similar size, apparently mature, and seem to reflect mass mortality, possibly related to reproduction (semelparity). Associated with these

档案 发表于 2025-3-27 19:44:02

Conch Ultrastructure and Septal Neck Ontogeny of the Belemnite , (Duvaliidae) from the Valanginian oposed of long mural parts of the septa and/or of the prismatic layer of the primordial rostrum. The first septum is prismatic; others are formed by the nacreous layer Type 2 (Mutvei, 1970), which in sections gives an impression of a granular structure; the mural parts of the septa show tabular nacre

Noctambulant 发表于 2025-3-28 01:58:02

http://image.papertrans.cn/a/image/150371.jpg

insomnia 发表于 2025-3-28 04:21:42

https://doi.org/10.1007/978-1-4615-4837-9Ecology; Mollusca; Palaeoecology; Taphonomy; biogeography; development; evolution; morphology; zoology

废止 发表于 2025-3-28 09:31:00

978-1-4613-7193-9Springer Science+Business Media New York 1999

SOW 发表于 2025-3-28 11:07:10

Cephalopod Development and Evolution evolutionary biology are viewed on the background of three special problems of cephalopod morphology: the reproductive system of octopods, the lower beaks of coleoids and ammonites, and the arm crown of the coleoids.
页: 1 2 3 [4] 5 6 7
查看完整版本: Titlebook: Advancing Research on Living and Fossil Cephalopods; Development and Evol Federico Olóriz,Francisco J. Rodríguez-Tovar Book 1999 Springer S