TRILOBITE GENERA AND SPECIES
LIST
for Genera beginning with letter M
Macannaia Jell, 1975
Macannaia maladensis
(Resser, 1939b)
Macropyge
Macropyge gladiator
(Ross, 1951)
Madaraspis
Madaraspis magnifica
(Fortey and Droser, 1996)
Marjumia (Walcott,
1916)
Marjumia
bagginsi (Melzak and Westrop, 1994) [Pika
Formation]
Marjumia
callas (Walcott,
1916)
Marjumia cf.
M. transversa (Palmer, 1968) [Pika Formation]
Marjumia
typa (Walcott, 1916)
Marjumia sp. (see
Melzak and Westrop, 1994) [Pika
Formation]
Maryvillia (Walcott,
1916b)
Maryvillia arion
Maryvillia sp.
Mcnairia (Deiss,
1939 [This genus is a junior synonym of Parehmania Deiss, 1939])
Mcnairia inornata
(Deiss, 1939 [Montana])
Menomonia (Walcott,
1916a)
Menomonia calymenoides
Menomonia
semele (=Densonella
semele Walcott, 1916)]
Menomonia sp. [=Densonella sp. (Weeks Formation, not yet described)]
Menomonia sp. (Weeks Formation)
Menoparia (Ross,
1951)
Menoparia genalunata
(Ross, 1951)
Mesonacis (Walcott,
1885)
Mesonacis
eagerensis (Best)
Mesonacis
fremonti [Latham
Shale Formation]
Mesonacis n.
sp.
Metabowmania
Metabowmania sp. nov. (Fillmore Formation)
Meteoraspis (Resser, 1935)
Meteoraspis
dis
Mexicaspis
(Lochman, 1948)
Mexicaspis cf.
difuntosensis (Lochman, 1948)
Mexicaspis
radiatus (Palmer, in Palmer & Halley 1979)
Mexicella (Lochman, 1948
Mexicella antelopea
(Sundberg and McCollum, 2000)
Mexicella grandoculus
(Palmer in Palmer & Halley 1979)
Mexicella granulata (Eddy
and McCollum, 1998)
Mexicella mexicana (Lochman,
1948)
Mexicella obscurus
(Palmer in Palmer & Halley 1979)
Mexicella
robusta (Sundberg and McCollum, 2000)
Mexicella stator (Walcott, 1916)
Mexicella sp.
[Dome Limestone, Western Utah]
Microryctocara Sundberg & McCollum, 1997
Microryctocara nevadensis (Sundberg & McCollum, 1997 [Reported
by Sundberg & McCollum, 2003b from the Monola
Formation in California &
the Emigrant
Formation, Western Nevada])
Modocia (Walcott, 1924)
Modocia brevispina (Robison, 1964)
Modocia hewlisca [from the Weeks Formation = "Modocia
weeksensis"]
Modocia hewlisca (type 1) [Weeks
Formation]
Modocia hewlisca (type 2) [Weeks
Formation]
Modocia hewlisca (type 3) [Weeks
Formation]
Modocia laevinucha (Robison, 1964)
Modocia sp.
aff. M. laevinucha
[Pierson
Cove Formation, Western Utah]
Modocia nuchaspina, (Robison, 1964)
Modocia typicalis (Resser, 1938)
Modocia weeksensis (Shanan
Peters dissertation, 2003, unpubl.) - old name was Modocia hewlisca)
Modocia sp. [Marjum
Formation]
Modocia ? sp. [Marjum
Formation]
Minupeltis
Minupeltis conservator (Palmer, 1960)
Morosa
Morosa longispina (Palmer, 1960)
Mummaspis (Fritz, 1992)
Mummaspis oblisooculatus
(Fritz, 1992)
Mummaspis
sp. cf. M. oblisooculatus (Fritz, 1992) [Mural
Formation]
Mummaspis occidens
(Walcott, 1913)