Author: hgregory

Definitions Vomerine – a thin flat bone dividing the nostrils found in most vertebrates.  Paratoid/parotoid gland – a gland found on the neck, back, or shoulder of toads that secretes an alkaloid toxin that deters predators. It is also called bufotoxin and acts as a neurotoxin. Tibia – a strong bone in the leg of […]

Missouri Springs Geology The majority of Missouri springs originate in the dolomitic rock mass that makes up the majority of the Ozarks (Vineyard et al, 1982). Dolomite, also referred to as dolostone, is a sedimentary rock with calcium magnesium carbonate (CaMg(CO3)2) as its primary constituent. Dolomite forms through the chemical alteration of limestone. As result, […]

Note: Safety tips will be underlined. Weather Given its inland location, Missouri is highly prone to temperature extremes (Decker, 2015). Missouri consequently deals with inclement weather quite regularly. Missouri is affected in some capacity by the following: Storms and Thunderstorms A storm is a disturbance in the weather, which can arise from local surface heating […]

Introduction: Turtles and tortoises form the oldest living group of reptiles on earth; fossil evidence suggests that turtles were alive during the Triassic Period, which was over 200 million years ago. They have evolved little since this time and remain well-adapted for a variety of different environments; in fact, turtles can be found on every […]

A guide to a certain grayish-brown American mammal with a foxlike face, black mask, and ringed tail.

A guide to this medium-sized, moderately fast growing, aromatic tree with three distinctive leaf shapes.

A guide to this small minnow, also called the common creek chub, found in the eastern United States and Canada.

A guide to the identification, distinguishing traits, life history, and distribution of this small woodland salamander.

A guide to these small sparrows that flit about Western forest floors and flood the rest of North America in winter.

A guide to a few of the most common species of grass found in Missouri, including a printable identification card.

A guide to some of Missouri’s most common large river fish.

A guide to identifying key traits and classifying eight species of spiders found in Missouri.

A guide to wildflowers in the Asteraceae family commonly found in the state of Missouri.

A guide for identifying invasive and potentially harmful species throughout Missouri.

A guide to the identification, anatomy, and importance of a seven different Missouri crayfish species.

A guide to stargazing, navigation, visible meteorological events, light pollution, and star legends.

A guide to the geologic history and structures of Missouri, including folds, joints, and faults.

If a Missouri snake is venomous: It is in the pit viper family – it will have a distinguishable pit between each eye and nostril. These pits, sometimes referred to as loreal pits or fossa, are used as infrared-detecting organs, allowing the viper to sense its prey. Its pupils will be vertical slits. It will […]

Missouri is home to 13 species of carnivore ranging from the tiny least weasel, weighing a mere 2 ounces, to the 240 pound black bear (Hunter 2011, Reid 2006). Carnivore in the scientific sense of the word refers not simply to a species that eats meat, but to a species belonging to the order Carnivora. Species that fall […]

Suborder: Myomorpha (mice, rats, gerbils, jerboas, and relatives): Superfamily Dipodoidea: Family Dipodidae (birch mice, jerboas, and jumping mice): Genus: Zapus Meadow jumping mouse – Z. hudsonius ​Superfamily Muroidea: Nearly every species of myomorpha within Missouri fall under the superfamily Muroidea. Members can be found on every continent except Antarctica, and they live in a wide […]

Suborder: Castorimorpha (beavers, gophers, kangaroo rats, pocket mice, and relatives): Family Castoridae (beavers): Genus: Castor North American beaver – C. canadensis North America’s largest rodent. Beavers are semiaquatic (Reid 179). Homes are made along lakes, rivers, streams, sometimes ponds, and even swamps. Well known for making dams, beavers will typically do this in lakes and […]

Suborder: Hystricomorpha (hystricognath rodents): Family Myocastoridae (coypus): Genus: Myocastor Coypu – M. Coypus Native to South America, the Coypu has been introduced to both North America and Europe where the animal is commonly known as the Nutria. They resemble muskrats, however Nutria are significantly larger weighing anywhere from 10 to 20 pounds. A surefire way […]

Habitats, attributes, behavioral patterns, history, and ancestry of Missouri black bears, along with a tracking guide.

Examples and descriptions of common Missouri trees from each family, along with a guide to leaf identification.

Identification and advice about four of the most common wild, edible plants of Missouri.

Background knowledge necessary for learning the raptors of Missouri.

A field guide to ten species of Missouri birds in the order ciconiiform and family ardeidae.

Dean Jenn Smith’s step-by-step guide to studying geologic rock in the field.

Here’s how to identify seventeen poisonous Missouri plant species that contain glycoside.