placentula

placentula

An older term for a small placenta, a distinction of uncertain utility; microplacenta.
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References in periodicals archive ?
From this, it follows that the turtles species inhabited by larger and attached or highly-attached diatoms (such as Cocconeis placentula, Gomphonema parvulum, Placoneis elginensis) had smooth carapaces.
Cocconeis placentula B A A A Ehrenberg Denticula valida C A A (Pedicino) Grunow Denticula sp1 A Diadesmis gallica B C W.
placentula and Planothidium lanceolate were present in low relative abundance.
Slowly increasing relative abundances of Cocconeis placentula, a reliable diatom indicator of macrophytes and higher total phosphorus (Reavie and Smol, 1997; Vermaire et al, 2011), at the bottom of the core suggested that Niven Lake was a naturally productive and macrophyte-dominated system, which according to our sterol analysis may have been the result of humans in the area (Fig.
Agardh and the epiphytic/epilithic diatoms Cocconeis placentula Ehrenberg and Gomponema parvulum (Kutzing) Kutzing were washed into the water column.
The pennate diatoms were attached to the substratum and included Cocconeis placentula, Amphora ovalis, Gyrosigma sp., Placoneis elginensis, and Nitzschia sigmoidea (Figures 4(a)-4(h)).
placentula Ehrenberg 1 -- -- Cocconeis sp -- 1 -- Coscinodiscus sp 10 2 8 Cyclotella sp -- -- 5 Cymbella amphicephalaNaegeli -- 1 -- C.
Among the 12 species indicators of the rural region, the most cited in the literature are Cyclotella meneghiniana Kutzing and Cocconeis placentula var.
ovalis, Anomoeoneis sphaerophora, Aphanothece stagnina, Brebissonia boeckii, Caloneis amphisbaena, Calothrix scopulorum, Cocconeis placentula, Coleofasciculus chthonoplastes, Diatoma vulgaris, Ellerbeckia arenaria, Gomphonema parvulum, Lyngbya aestuarii, Melosira varians, Meridion circulare, Microcoleus autumnalis, Navicula salinarum, N.