calcareous
51loam — Calcareous clay [16] …
52Lichens of Maryland — The following list of Lichens of Maryland is derived from the following sources: *(1) lichens listed in the 1977 publication by Skorepa (Allen C. Skorepa), Norden [http://www.pwrc.usgs.gov/resshow/perry/bios/NordenArnold.htm] , and Windler. *(2)… …
53GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… …
54sponge — spongeless, adj. spongelike, adj. spongingly, adv. /spunj/, n., v., sponged, sponging. n. 1. any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or… …
55skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… …
56metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
57cnidarian — /nuy dair ee euhn/, n. 1. any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria, characterized by the specialized stinging structures in the tentacles surrounding the mouth; a… …
58Crow's Nest, Stafford County, Virginia — Crow s Nest is a large wilderness area located on the southern border of Stafford County, Virginia, on Potomac Creek. The greater portion of the Crow’s Nest Peninsula is approximately 3,800 acres (15 km2) and lies within the coastal plain of …
59Sponge — This article is about the aquatic animal. For the porous cleaning tool, see Sponge (material). For other uses, see Sponge (disambiguation). Sponge Temporal range: Ediacaran–Recent …
60Crow's Nest Natural Area Preserve — Crow s Nest Point looking northeast Location Stafford County, Virginia, USA …
