Latest Cretaceous mammals of upper part of Edmonton Formation of Alberta, Canada, and review of marsupial-placental dichotomy in mammalian evolution [PDF]
, 2008 122 p., 53 fig.http://paleo.ku.edu/contributions ...
Lillegraven, Jason A.
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The Hormonal Basis for the Reproductive Cycle in Reptiles, With Emphasis on Lizards. [PDF]
, 1978 In its adaptation to a particular ecological niche, every species of animal has attained various adjustments in the timing of its reproductive efforts and in the number of offspring produced.
Holmes, Robert Arlen, II
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Reproductive cycle of the house gecko, Hemidactylus flaviviridis, in Oman in relation to morphological and ultrastructural changes and plasma steroid concentrations with reference to localisation of progesterone receptors [PDF]
, 2012 In Oman, a comprehensive study of the annual reproductive cycles of male and female house geckos, Hemidactylus flaviviridis was conducted. Circulating testosterone (T), oestradiol (E2) and progesterone (P) concentrations were measured using a sensitive ...
Al-Amri, Issa
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泌乳の開始ならびに初期進化に関する新仮説 : Olav Oftedal博士による見解 [PDF]
, 2004 application/pdfペンシルバニア紀(>3億1000万年前)に，有羊膜類であるSynapsidは他の系統から分化し，腺を発達させた。乳腺は毛包と会合した祖先型アポクリン腺から発達した。乳腺と毛の関係は単孔類の乳腺に保持されている。また，有袋類における乳腺毛の初期個体発生時の存在とその後の退化に，その証拠が残されている。単孔類の乳頭のない乳腺区分にあるmammo-ピロ-脂腺単位の密集した集団は，透水性を示す卵への水分や他の成分の補給のための構造的進化を反映しているかもしれない ...
1000050332482 +17 more
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Placental morphology and the cellular brain in mammalian evolution [PDF]
, 2011 A major focus of evolutionary neurobiology has been on whether different regions of the eutherian brain evolve in concert, and how free the brain is to evolve independently of body plans.
Lewitus, E.
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Role of Thyroid Hormone in the Intestinal Development of Eleutherodactylus coqui [PDF]
, 2009 Thyroid hormone (TH) is required for the metamorphosis of the long, coiled tadpole gut in Xenopus laevis into a shorter mature adult gut. Eleutherodactylus coqui, a direct developing frog, lacks a tadpole. Its embryonic gut is a miniature adult form with
Singamsetty, Srikanth
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Patterns of tooth replacement in osteichthyans: variations on a theme [PDF]
, 2004 Nonmammalian tooth-bearing vertebrates usually replace their teeth throughout life. Much about how a replacement pattern is generated has been learned from zebrafish. However, to understand general mechanisms of tooth replacement, advantage can be taken
Huysseune, Ann +2 more
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Increased superfetation precedes the evolution of advanced degrees of placentotrophy in viviparous fishes of the family Poeciliidae. [PDF]
Biol Lett, 2022 García-Cabello KN +4 more
europepmc +1 more source
Ecología reproductiva de la raya de círculos Atlantoraja cyclophora en el área costera bonaerense [PDF]
, 2018 En este trabajo se analizan la morfología del aparato reproductor, la biologíareproductiva y la distribución y abundancia de la raya Atlantoraja cyclophora en elDistrito Biogeográfico Bonaerense, entre los 34° y 42°S.El material analizado provino de ...
Wehitt, Anahi
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All animals are interesting : a Festschrift in honour of Anthony P. Russell [PDF]
, 2015 This volume of original papers elebates the 40+ year career of Anthony Russell on the occasion of his retirement as professor at the University of Calgary, Canada.
Bauer, Aaron M. +3 more
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