Glossary of terms
to the winners of the
If you submitted answers to me, thank you for your participation.
The skillful and knowledgable winners of the prizes are listed
among the prize descriptions shown below.
Please scroll down to the contest questions to see the answers.
Frank Habets (one of the cofounders of the Yahoo Trilobite Club) answered 19 of the 20 questions flawlessly. He will receive a printed and autographed hardcopy version of "Guide to the Orders of Trilobites." He is also eligible to receive the
Nice double Cedaria minor specimen
(scale in mm)
Frank tells me that he doesn't need the specimen (I can only imagine how nice his Cedaria minor specimen looks!) and graciously makes it available for me to award to the 2nd place winner:
last revised 17 MAR 2000
©1999, 2000 by S. M. Gon III
TRILOBITE CONTEST ANSWERS
(you may click on the answers to be taken to the page that provides the information)
What order of trilobites is marked by a cephalic ventral median suture?
What suborder of trilobites is marked by schizochroal eyes?
What Superfamily often bears ventrally-directed thoracic spines?
Name a lateral coaptative structure and a genus that bears it.
VINCULAR FURROWS Phacops (many other genera acceptable)
In what ontogenetic period do thoracic segments first appear?
What major trilobite predator was lacking in the Cambrian?
NAUTILOIDS, BONY FISHES (some other answers acceptable)
Name three trilobite orders with natant hypostomes
Any of: PTYCHOPARIIDA, PROETIDA, PHACOPIDA, AGNOSTIDA
From what order might Phacopida have arisen?
Name two orders often bearing proparian sutures.
Name a genus in the family Ignotogregatidae.
What Superfamily has the most thoracic segments?
Name all of the Geological Periods with trilobites.
CAMBRIAN, ORDOVICIAN, SILURIAN, DEVONIAN, CARBONIFEROUS, PERMIAN
(it was acceptable to divide Carboniferous into Pennsylvanian and Mississippian)
What kind of hypostomes do Illaenina typically have?
What suborder is typically gonatoparian?
Name a trilobite genus that includes macropygous species.
Scutellum (other answers possible)
What is distinctive about the eyes of Conocoryphe?
What is the earliest recorded Order of trilobites?
Name a genus of trilobite in which limbs are preserved.
Triarthrus, Olenoides, Phacops, Agnostus (others acceptable)
Name two distinguishing features of Condylopygoidea.
Any two of:
Anterior lobe of glabella broader than posterior lobe
Basal glabellar lobes form clear occipital structure
Pygidial anteroaxis triannulate
What Superfamily of trilobites persisted to the Permian?
I hope you enjoyed the challenge!
Please join me in congratulating the winners!