Each cell has a centrally suspended, conspicuous rhomboidal disk interpreted as a pyrenoid.
Stefan Bengtson, Therese Sallstedt, Veneta Belivanova, Martin Whitehouse 2017, 'Three-dimensional preservation of cellular and subcellular structures suggests 1.6billion-year-old crown-group red algae.', PLoS Biologyhttp://europepmc.org/articles/PMC5349422?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Most particles have rectangular and rhomboidal projections, whilst others are triangular, or irregular.
Heng Zhang, Heng Zhang, Heng Zhang, Heng Zhang, Nicolas Menguy, Nicolas Menguy, FuxianWang, Fuxian Wang, Fuxian Wang, Karim Benzerara, Eric Leroy, Peiyu Liu, Peiyu Liu,Peiyu Liu, Wenqi Liu, Wenqi Liu, Wenqi Liu, Chunli Wang, Yongxin Pan, Yongxin Pan,Zhibao Chen, Jinhua Li, Jinhua Li, Jinhua Li 2017, 'Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms OctahedralMagnetite Magnetosomes', Frontiers in Microbiologyhttp://journal.frontiersin.org/article/10.3389/fmicb.2017.00969/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Secondary phloem and parenchyma cells presented abundant calcium oxalate druses and solitary rhomboidal crystals.
María Inés Mercado, María Alejandra Moreno, Ana Inés Ruiz, Ivana Fabiola Rodríguez,Iris Catiana Zampini, María Inés Isla, Graciela Inés Ponessa 2018, 'Morphoanatomical and histochemical characterization of Larrea species from Northwesternof Argentina', Revista Brasileira de Farmacognosiahttp://www.sciencedirect.com/science/article/pii/S0102695X18301261. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The arrangement of the grains may be rhomboidal, tetrahedral or decussate.
R. L. Verhoeven, H. J. T. Venter 1993, 'Pollen morphology of Curroria, Mondia, Socotranthus and Stomatostemma(Periplocaceae)', Bothalia: African Biodiversity & Conservationhttps://abcjournal.org/index.php/abc/article/view/795. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This lesion was radically excised, and the resulting surgical defect was closed using a homolateral double opposing rhomboidal flap.
Pedro Andrade, Ana Brinca, Ricardo Vieira, Américo Figueiredo 2012, 'Double rhomboidal flap for reconstruction of large surgical defect of the labial commissureRetalho romboidal duplo para reconstrução de defeito cirúrgico da comissura labial',Anais Brasileiros de Dermatologiahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962012000300015. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
To establish the place of the columns he may have used either a rectangular grid or a rhomboidal grid.
Fernández Puertas, Antonio 2008, 'II. Mezquita de Córdoba. ‘Abd al-Raḥmān I (169/785-786). El trazado proporcional dela planta y alzado de las arquerías del oratorio. La <i>qibla</i> y el<i>miḥrāb</i> del siglo VIII', Archivo Español de Artehttp://xn--archivoespaoldearte-53b.revistas.csic.es/index.php/aea/article/view/127/128. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)