Tullimonstrum, colloquially known as the Tully monster or sometimes Tully's monster, is an extinct genus of soft-bodied bilaterian animal that lived in...

the Loch was an invertebrate creature similar in form to the extinct Tullimonstrum gregarium, but vastly larger. Holiday also claimed that he noticed several...

be a large invertebrate such as a bristleworm; he cited the extinct Tullimonstrum as an example of the shape. According to Holiday, this explains the...

includes the most famous faunal member of the Illinois state fossil Tullimonstrum, known popularly as the "Tully Monster". Other well-documented organisms...

world-famous Mazon Creek fauna, home to the Illinois's State Fossil, Tullimonstrum gregarium. A significant unconformity separates Mississippian from Pennsylvanian...

Vernanimalcula guizhouena: is this fossil organism an early bilaterian? Tullimonstrum: a taxonomic position of this fossil organism is unknown. Adult form...

Bilateria/Triploblasts (unranked)? Proarticulata † Xenacoelomorpha Kimberella† Tullimonstrum† Saccorhytida † Nephrozoa (unranked) Superphylum Deuterostomia Chordata...

Hagerman horse Equus simplicidens Illinois Pennsylvanian Tully monster Tullimonstrum gregarium 1989 Indiana Holocene American mastodon Mammut americanum...

(comb jellies) Cnidaria Trilobozoa † Bilateria (unranked) Acoelomorpha Tullimonstrum † Proarticulata † Mesozoa (unranked) Orthonectida Rhombozoa Monoblastozoa...

mostly look like a much younger extinct animal, the Tully monster (Tullimonstrum gregarium), which is still debated as either an invertebrate or a chordate...