Graphic used with permission. Daniel D. Brown, LaughingMantis.com. Echinoderms are one of the most highly derived groups of animals with many species as significant components of several marine communities. They’re classified by three fundamental shared characteristics: 1) pentaradial symmetry, 2) skeleton made of three-dimensional calcitic elements, and 3) the presence of a water . . . → Read More: Veins of Water: The Evolution of the Echinoderm Water-Vascular System
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By Kevin Zelnio, on  March 20th, 2012  One comment  Adaptations, Evolution, Paleobiology  Echinodermata, echinoderms, Evolutionary History, fossil, Madreporite, Phylogeny, Radial Symmetry, Water Vascular System, Xyloplax By Dr. M, on July 15th, 2011 4 comments Biodiversity, Evolution, Geology, Paleobiology, TGIF: Pictures & Movies Cambrian explosion, Disparity, diversity Because it’s Friday and you need to begin every Friday morning with a song about the Cambrian Explosion Broadcast Spawn!Tweet#call_to_action h4{padding:0px 5px;}Because it’s Friday and you need to begin every Friday morning with a song about the Cambrian Explosion Broadcast Spawn!Tweet By Dr. M, on February 24th, 2011 Leave a comment Biodiversity, Cephalopods!, Environmental Sciences, Evolution, Geology, Natural Disaster, New Research, Paleobiology, Paleobiology ammonoid, anoxia, Biodiversity, Cambrian explosion, coal fly ash, extintion, flood basalt, mass extinction, Paleobiology, Permian, Siberian Trap An occasional series where we briefly report 3 new studies and tell you why they are cool! Heightened biodiversity may make an ecosystem more stabile and robust. One of the reasons for this is that high biodiversity may create redundant species, i.e. species that serve a similar ecological role in the ecosystem. A loss of one species may not . . . → Read More: Tide Pool: Cephalopods, Ash, and Sulphur Are to Blame
By Archie Teuthis, on January 15th, 2011 Leave a comment Adaptations, Biodiversity, Conservation & Environment, Critters, Ecology, Environmental Sciences, Evolution, Geology, Life Science, Paleobiology, Paleobiology, Scientist! Carbon, diatom, frustules, phytoplankton, Scientist In Residence Dear Diatoms, You are pretty, and I like you. Haeckel liked you too, so did Gaudi. Obviously, they appreciated the little things in life. While you still make appearances now and again in modern life, let’s face it: being microscopic and aquatic, recognition is an up-current battle, and you can’t swim. Perhaps obscurity suits you? . . . → Read More: Scientist In Residence: Danny Richter on the To Humble Diatom
By Dr. M, on December 1st, 2010 2 comments Cephalopods!, Ecology, Evolution, Paleobiology, Paleobiology ammonite, Cephalopod, fossil, Predation, predator New work in the Proceedings of the Yorkshire Geological Society indicates that ammonites were likely preyed upon beaked squids. The Chamouth Mudstone Formation on the British Coast is famous for its ammonite fauna from 183-195 million years ago. Twenty percent of the ammonites were found to have damage toward the rear of shell. This spot . . . → Read More: Cephalopod on Cephalopod Crime
By Dr. M, on October 20th, 2010 5 comments Adaptations, Biodiversity, Evolution, Fish, Life Science, Mating & Reproduction, Paleobiology, Paleobiology adaptation, Cretaceous, deep sea, evolution, hermaphrodite, Jurassic, lizardfish 145 million years ago, in the Cretaceous, the air was warm and the seas were high and rum flowed freely. On land, mammals were oppressed under dinosaur Republican rule. Massive reptiles and ammonites, long since extinct, dominated the oceans. Under the reign of these giants, the lizardfishes were mere fledglings. Today, the 256 known lizardfishes represent an . . . → Read More: Of eyes and sex in lizardfishes
By Kevin Zelnio, on August 30th, 2010 Leave a comment Adaptations, Biodiversity, Evolution, New Research, Paleobiology Best of Zelnio, China, Crustacea, fossil, Yicaris Finding any new fossil is rare. Finding invertebrate fossils is made even more rare because of the squishy nature of most invertebrates. Sometimes the wandering paleontologist, toiling away with utmost care through dust and debris, can find parts of squishy invertebrates like scolodonts (polychaete jaws), coral rubble, carbonate shell cement, or maybe sea star or . . . → Read More: Yicaris – Progenitor of the Crustacea
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